<PAGE>   1

                                                                EXHIBIT 4(l)



           _________________________________________________________



                              GUARANTEE AGREEMENT


                             CMS Energy Corporation

                                      and

                              The Bank of New York


                    Relating to the Trust Preferred Securities of

                               CMS Energy Trust IV


                           Dated as of ________, 2001

           _________________________________________________________

<PAGE>   2


                             CROSS REFERENCE TABLE*



Section of Trust                                                     Section of
Indenture Act of                                                      Guarantee
1939, as amended                                                      Agreement

310(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1(a)
310(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4.1(c), 2.8
310(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
311(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2(b)
311(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2(b)
311(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
312(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2(a)
312(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2(b)
313 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.3
314(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.4
314(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
314(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.5
314(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
314(e)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1.1, 2.5, 3.2
314(f)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3.2
315(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1(d)
315(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.7
315(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3.1
315(d)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1(d)
316(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1.1, 2.6, 5.4
316(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5.3
317(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
317(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
318(a)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1(b)
318(b)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.1
318(c)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1(a)





----------------------------------

*  This Cross-Reference Table does not constitute part of the Guarantee
   Agreement and shall not affect the interpretation of any of its terms or
   provisions.



                                      2

<PAGE>   3


                               TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                                                              Page
                                                            ARTICLE 1                                         ----
                                                           DEFINITIONS


<S>            <C>                                                                                            <C>
SECTION 1.1.    Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2

                                                            ARTICLE 2
                                                       TRUST INDENTURE ACT

SECTION 2.1.    Trust Indenture Act; Application  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
SECTION 2.2.    List of Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
SECTION 2.3.    Reports by the Guarantee Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
SECTION 2.4.    Periodic Reports to Guarantee Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
SECTION 2.5.    Evidence of Compliance with Conditions Precedent  . . . . . . . . . . . . . . . . . . . . . .  6
SECTION 2.6.    Events of Default; Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
SECTION 2.7.    Event of Default; Notice  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
SECTION 2.8.    Conflicting Interests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7

                                                            ARTICLE 3
                                        POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

SECTION 3.1.    Powers and Duties of the Guarantee Trustee  . . . . . . . . . . . . . . . . . . . . . . . . .  8
SECTION 3.2.    Certain Rights of Guarantee Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SECTION 3.3.    Indemnity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

                                                            ARTICLE 4
                                                        GUARANTEE TRUSTEE

SECTION 4.1.    Guarantee Trustee; Eligibility  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SECTION 4.2.    Appointment, Removal and Resignation of the Guarantee Trustee . . . . . . . . . . . . . . . . 14

                                                            ARTICLE 5
                                                            GUARANTEE

SECTION 5.1.    Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
</TABLE>





                                       i
<PAGE>   4


<TABLE>
<S>                       <C>                                                                                                <C>
SECTION 5.2.              Waiver of Notice and Demand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15
SECTION 5.3.              Obligations Not Affected  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15
SECTION 5.4.              Rights of Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
SECTION 5.5.              Guarantee of Payment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   17
SECTION 5.6.              Subrogation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   17
SECTION 5.7.              Independent Obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18

                                                                    ARTICLE 6
                                                           COVENANTS AND SUBORDINATION

SECTION 6.1.              Subordination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18
SECTION 6.2.              Certain Covenants of the Guarantor  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18

                                                                    ARTICLE 7
                                                                   TERMINATION

SECTION 7.1.              Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   20

                                                                    ARTICLE 8
                                                                  MISCELLANEOUS

SECTION 8.1.              Successors and Assigns  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   20
SECTION 8.2.              Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   21
SECTION 8.3.              Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   21
SECTION 8.4.              Benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   22
SECTION 8.5.              Interpretation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   22
SECTION 8.6.              Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   24
</TABLE>





                                       ii
<PAGE>   5


                              GUARANTEE AGREEMENT


                  This GUARANTEE AGREEMENT, dated as of ________, 2000, is
executed and delivered by CMS Energy Corporation, a Michigan corporation (the
"Guarantor") and The Bank of New York, a New York banking corporation, as
trustee (the "Guarantee Trustee"), for the benefit of the Holders (as defined
herein) from time to time of the Trust Preferred Securities (as defined herein)
of CMS Energy Trust IV, a Delaware statutory business trust (the "Issuer").

                  WHEREAS, the Trust Preferred Securities will be issued by the
Issuer and the proceeds thereof, together with the proceeds from the issuance of
the Issuer's Common Securities (as defined below), will be used to purchase the
Debentures (as defined in the Trust Agreement) of the Guarantor which will be
deposited with The Bank of New York, as Property Trustee under the Trust
Agreement, as trust assets;

                  WHEREAS, as incentive for the Holders to purchase Trust
Preferred Securities, the Guarantor desires irrevocably and unconditionally to
agree, to the extent set forth herein, to pay to the Holders of the Trust
Preferred Securities the Guarantee Payments (as defined herein) and to make
certain other payments  on the terms and conditions set forth herein; and

                   WHEREAS, the Guarantor is also executing and delivering a
guarantee agreement (the "Common Securities Guarantee") in substantially
identical terms to this Guarantee for the benefit of the holders of the Common
Securities (as defined herein), except that if an





<PAGE>   6


event of default (as defined in the Indenture (as defined herein)), has
occurred and is continuing, the rights of holders of the Common Securities to
receive Guarantee Payments (as defined in the Common Securities Guarantee)
under the Common Securities Guarantee shall be subordinated to the rights of
Holders of Trust Preferred Securities to receive Guarantee Payments (as defined
herein) under this Guarantee;


                   NOW, THEREFORE, in consideration of the purchase by each
Holder of Trust Preferred Securities, which purchase the Guarantor hereby
agrees shall benefit the Guarantor, the Guarantor executes and delivers this
Guarantee Agreement for the benefit of the Holders from time to time of
the Trust Preferred Securities.

                                  ARTICLE 1
                                 DEFINITIONS

                   SECTION 1.1.  Definitions.  As used in this
Guarantee Agreement, the terms set forth below shall, unless the context
otherwise requires, have the following meanings.  Capitalized or otherwise
defined terms used but not otherwise defined herein shall have the meanings
assigned to such terms in the Trust Agreement as in effect on the date hereof.

                   "Affiliate" of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct common
control with such specified Person, provided, however, that an Affiliate of the
Guarantor shall not be deemed to include the Issuer.  For the purposes of this
definition, "control" when used with respect to any specified Person means the
power to direct the management and policies of such Person, directly or
indirectly, whether through the ownership of voting securities, by contract or
otherwise; and the terms "controlling" and "controlled' have meanings
correlative to the foregoing.

                   "Common Securities" means the securities representing
common beneficial interests in the assets of the Issuer.

                   "Common Stock" shall mean the common stock, par value $.01,
per share, of the Guarantor.



                                      2


<PAGE>   7


                   "Event of Default" means a default by the Guarantor on any
of its payment or other obligations under this Guarantee Agreement; provided,
however, that, except with respect to a default in payment of any Guarantee
Payments, the Guarantor shall have received written notice of default and shall
not have cured such default within 60 days after receipt of such notice.

                   "Guarantee Payments" means the following payments or
distributions, without duplication, with respect to the Trust Preferred
Securities, to the extent not paid or made by or on behalf of the Issuer:  (i)
any accumulated and unpaid Distributions (as defined in the Trust Agreement)
required to be paid on the Trust Preferred Securities, to the extent the Issuer
shall have funds on hand available therefor at such time, (ii) the redemption
price, including all accrued and unpaid Distributions to the date of redemption
(the "Redemption Price"), with respect to the Trust Preferred Securities called
for redemption by the Issuer to the extent the Issuer shall have funds on hand
available therefor, and (iii) upon a voluntary or involuntary dissolution,
winding-up or liquidation of the Issuer, unless Debentures are distributed to
the Holders, the lesser of (a) the aggregate of the liquidation preference of
$50 per Preferred Security plus accrued and unpaid Distributions on the Trust
Preferred Securities to the date of payment to the extent the Issuer shall have
funds on hand available to make such payment and (b) the amount of assets of
the Issuer remaining available for distribution to Holders in liquidation of
the Issuer (in either case, the "Liquidation Distribution").

                   "Guarantee Trustee" means The Bank of New York, until a
Successor Guarantee Trustee has been appointed and has accepted such
appointment pursuant to the terms of this Guarantee Agreement and thereafter
means each such Successor Guarantee Trustee.

                   "Holder" means any holder, as registered on the books and
records of the Issuer, of any Trust Preferred Securities; provided, however,
that in determining whether the holders of the requisite percentage of Trust
Preferred Securities have given any request, notice, consent or waiver
hereunder, "Holder" shall not include the Guarantor, the Guarantee Trustee or
any Affiliate of the Guarantor or the Guarantee Trustee.





                                       3
<PAGE>   8


                   "Indenture" means the Indenture dated as of ________, 2000,
as supplemented and amended between the Guarantor and The Bank of New York, as
trustee.

                   "List of Holders" has the meaning specified in Section 2.2
(a).

                   "Majority in Liquidation Preference of the Securities"
means, except as provided by the Trust Indenture Act, a vote by the Holder(s),
voting separately as a class, of more than 50% of the liquidation preference
of all the outstanding Trust Preferred Securities issued by the Issuer.

                   "Officers' Certificate" means, with respect to any Person, a
certificate signed by (i) the Chairman, Chief Executive Officer, President or
a Vice President, and by (ii) the Treasurer, an Assistant Treasurer, the
Controller, the Secretary or an Assistant Secretary of such Person, and
delivered to the Guarantee Trustee.  Any Officers' Certificate delivered with
respect to compliance with a condition or covenant provided for in this
Guarantee Agreement shall include:

                   (a)  a statement that each officer signing the Officers'
Certificate has read the covenant or condition and the definitions relating
thereto;

                   (b)  a brief statement of the nature and scope of the
examination or investigation undertaken by each officer in rendering the
Officers' Certificate;

                   (c)  a statement that each such officer has made such
examination or investigation as, in such officer's opinion, is necessary to
enable such officer to express an informed opinion as to whether or not such
covenant or condition has been complied with; and

                   (d)  a statement as to whether, in the opinion of each such
officer, such condition or covenant has been complied with.

                   "Person" means a legal person, including any individual,
corporation, estate, partnership, joint venture, association, joint stock
company, limited liability company, trust, unincorporated association, or




                                       4
<PAGE>   9


government or any agency or political subdivision thereof, or any other entity
of whatever nature.

                   "Responsible Officer" means, with respect to the Guarantee
Trustee, any Executive Vice President, Senior Vice President, any First Vice
President, any Vice President, any Assistant Vice President, the Secretary, any
Assistant Secretary, the Treasurer, any Assistant Treasurer, any Trust Officer
or Assistant Trust Officer or any other officer of the Corporate Trust Services
Division of the Guarantee Trustee customarily performing functions similar to
those performed by any of the above designated officers and also means, with
respect to a particular corporate trust matter, any other officer to whom such
matter is referred because of that officer's knowledge of and familiarity with
the particular subject.

                   "Successor Guarantee Trustee" means a successor Guarantee
Trustee possessing the qualifications to act as Guarantee Trustee under
Section 4.1.

                   "Trust Indenture Act" means the Trust Indenture Act of
1939, as amended.

                                   ARTICLE 2
                              TRUST INDENTURE ACT

                   SECTION 2.1.  Trust Indenture Act; Application. (a)  This
Guarantee Agreement is subject to the provisions of the Trust Indenture Act
that are required to be part of this Guarantee Agreement and shall, to the
extent applicable, be governed by such provisions.

                   (b)  If and to the extent that any provision of this
Guarantee Agreement limits, qualifies or conflicts with the duties imposed by
Sections 310 to 317, inclusive, of the Trust Indenture Act, such imposed
duties shall control.

                   SECTION 2.2.  List of Holders.  (a)  The Guarantor shall
furnish or cause to be furnished to the Guarantee Trustee (unless the
Guarantee Trustee is acting as Securities Registrar with respect to the
Debentures under the Indenture) (i) semi-annually, on or before January 15 and
July 15 of each year, a list, in such form as the Guarantee Trustee may
reasonably re-




                                       5
<PAGE>   10


quire, of the names and addresses of the Holders ("List of Holders") as of a
date not more than 15 days prior to the delivery thereof, and (ii) at such
other times as the Guarantee Trustee may request in writing, within 30 days
after the receipt by the Guarantor of any such request, a List of Holders as of
a date not more than 15 days prior to the time such list is furnished, in each
case to the extent such information is in the possession or control of the
Guarantor and is not identical to a previously supplied list of Holders or has
not otherwise been received by the Guarantee Trustee.  Notwithstanding the
foregoing, the Guarantor shall not be obligated to provide such List of Holders
at any time the Trust Preferred Securities are represented by one or more Global
Certificates (as defined in the Indenture).  The Guarantee Trustee may destroy
any List of Holders previously given to it on receipt of a new List of Holders.

                              (b)  The Guarantee Trustee shall comply with its
obligations under Section 311(a), Section 311(b) and Section 312(b) of the
Trust Indenture Act.

                              SECTION 2.3.  Reports by the Guarantee Trustee.
On or before July 15, of each calendar year, the Guarantee Trustee shall
provide to the Holders such reports as are required by Section 313 of the Trust
Indenture Act, if any, in the form and in the manner provided by Section 313 of
the Trust Indenture Act.  The Guarantee Trustee shall also comply with the
requirements of Section 313(d) of the Trust Indenture Act.

                              SECTION 2.4.  Periodic Reports to Guarantee
Trustee.  The Guarantor shall provide to the Guarantee Trustee, the Securities
and Exchange Commission and the Holders such documents, reports and
information, if any, as required by Section 314 of the Trust Indenture Act and
the compliance certificate required by Section 314 of the Trust Indenture Act
in the form, in the manner and at the times required by Section 314 of the
Trust Indenture Act.

                              SECTION 2.5.  Evidence of Compliance with
Conditions Precedent.  The Guarantor shall provide to the Guarantee Trustee
such evidence of compliance with such conditions precedent, if any, provided
for in this Guarantee Agreement that relate to any of the matters set forth in
Section 314(c) of the Trust Indenture Act.  Any





                                       6
<PAGE>   11


certificate or opinion required to be given by an officer pursuant to Section
314(c)(1) may be given in the form of an Officers' Certificate.

                              SECTION 2.6.  Events of Default; Waiver.  The
Holders of a Majority in Liquidation Preference of the Securities may, by vote,
on behalf of the Holders, waive any past Event of Default and its consequences.
Upon such waiver, any such Event of Default shall cease to exist, and any Event
of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Guarantee Agreement, but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
therefrom.

                              SECTION 2.7.  Event of Default; Notice.  (a)  The
Guarantee Trustee shall, within 90 days after the occurrence of an Event of
Default, transmit by mail, first class postage prepaid, to the Holders, notices
of all Events of Default known to the Guarantee Trustee, unless such defaults
have been cured before the giving of such notice, provided, that, except in the
case of a default in the payment of a Guarantee Payment, the Guarantee Trustee
shall be protected in withholding such notice if and so long as the Board of
Directors, the executive committee or a trust committee of directors and/or
Responsible Officers of the Guarantee Trustee in good faith determines that the
withholding of such notice is in the interests of the Holders.

                              (b)  The Guarantee Trustee shall not be deemed to
have knowledge of any Event of Default unless the Guarantee Trustee shall have
received written notice, or a Responsible Officer charged with the
administration of the Trust Agreement shall have obtained written notice, of
such Event of Default.

                              SECTION 2.8.  Conflicting Interests.  The Trust
Agreement and the Indenture shall be deemed to be specifically described in
this Guarantee Agreement for the purposes of clause (i) of the first proviso
contained in Section 310(b) of the Trust Indenture Act.





                                       7
<PAGE>   12


                                   ARTICLE 3
               POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

                              SECTION 3.1.  Powers and Duties of the Guarantee
Trustee.  (a)  This Guarantee Agreement shall be held by the Guarantee Trustee
for the benefit of the Holders, and the Guarantee Trustee shall not transfer
this Guarantee Agreement to any Person except a Holder exercising his or her
rights pursuant to Section 5.4(iv) or to a Successor Guarantee Trustee on
acceptance by such Successor Guarantee Trustee of its appointment to act as
Successor Guarantee Trustee.  The right, title and interest of the Guarantee
Trustee shall automatically vest in any Successor Guarantee Trustee, upon
acceptance by such Successor Guarantee Trustee of its appointment hereunder,
and such vesting and cessation of title shall be effective whether or not
conveyancing documents have been executed and delivered pursuant to the
appointment of such Successor Guarantee Trustee.

                              (b)  If an Event of Default actually known to the
Responsible Officer of the Guarantee Trustee has occurred and is continuing,
the Guarantee Trustee shall enforce this Guarantee Agreement for the benefit of
the Holders.

                              (c)  The Guarantee Trustee, before the occurrence
of any Event of Default and after the curing of all Events of Default that may
have occurred, shall undertake to perform only such duties as are specifically
set forth in this Guarantee Agreement, and no implied covenants shall be read
into this Guarantee Agreement against the Guarantee Trustee.  In case an Event
of Default has occurred (that has not been cured or waived pursuant to Section
2.6) and is actually known to the Responsible Officer of the Guarantee Trustee,
the Guarantee Trustee shall exercise such of the rights and powers vested in it
by this Guarantee Agreement, and use the same degree of care and skill in its
exercise thereof, as a prudent person would exercise or use under the
circumstances in the conduct of his or her own affairs.

                              (d)  No provision of this Guarantee Agreement
shall be construed to relieve the Guarantee Trustee from liability for its own
negligent action, its own negligent failure to act or its own willful
misconduct, except that:





                                       8
<PAGE>   13


                          (i)  prior to the occurrence of any Event of Default
                          and after the curing or waiving of all such Events of
                          Default that may have occurred;

                              (A)  the duties and obligations of the Guarantee
                          Trustee shall be determined solely by the express
                          provisions of this Guarantee Agreement, and the
                          Guarantee Trustee shall not be liable except for the
                          performance of such duties and obligations as are
                          specifically set forth in this Guarantee Agreement;
                          and

                              (B)  in the absence of bad faith on the part of
                          the Guarantee Trustee, the Guarantee Trustee may
                          conclusively rely, as to the truth of the statements
                          and the correctness of the opinions expressed
                          therein, upon any certificates or opinions furnished
                          to the Guarantee Trustee and conforming to the
                          requirements of this Guarantee Agreement; but in the
                          case of any such certificates or opinions that by any
                          provision hereof or of the Trust Indenture Act are
                          specifically required to be furnished to the
                          Guarantee Trustee, the Guarantee Trustee shall be
                          under a duty to examine the same to determine whether
                          or not they conform to the requirements of this
                          Guarantee Agreement;

                          (ii)  the Guarantee Trustee shall not be liable for
                          any error of judgment made in good faith by a
                          Responsible Officer of the Guarantee Trustee, unless
                          it shall be proved that the Guarantee Trustee was
                          negligent in ascertaining the pertinent facts upon
                          which such judgment was made;

                          (iii)  the Guarantee Trustee shall not be liable with
                          respect to any action taken or omitted to be taken by
                          it in good faith in accordance with the direction of
                          the Holders of not less than a Majority in
                          Liquidation Preference of the Securities relating to
                          the time, method and place of con-





                                       9
<PAGE>   14


                          ducting any proceeding for any remedy available to
                          the Guarantee Trustee, or exercising any trust or
                          power conferred upon the Guarantee Trustee under this
                          Guarantee Agreement; and

                          (iv)  no provision of this Guarantee Agreement shall
                          require the Guarantee Trustee to expend or risk its
                          own funds or otherwise incur personal financial
                          liability in the performance of any of its duties or
                          in the exercise of any of its rights or powers, if
                          the Guarantee Trustee shall have reasonable grounds
                          for believing that the repayment of such funds or
                          liability is not reasonably assured to it under the
                          terms of this Guarantee Agreement or adequate
                          indemnity against such risk or liability is not
                          reasonably assured to it.

                              SECTION 3.2.  Certain Rights of Guarantee
        Trustee.  (a)  Subject to the provisions of Section 3.1:

                              (i)  The Guarantee Trustee may rely and shall be
                          fully protected in acting or refraining from acting
                          upon any resolution, certificate, statement, proxy,
                          instrument, opinion, report, notice, request,
                          direction, consent, order, bond, debenture, note,
                          other evidence of indebtedness or other paper or
                          document believed by it to be genuine and to have
                          been signed, sent or presented by the proper party or
                          parties.

                              (ii)  Any direction or act of the Guarantor
                          contemplated by this Guarantee Agreement shall be
                          sufficiently evidenced by an Officers' Certificate
                          unless otherwise prescribed herein.

                              (iii)  Whenever, in the administration of this
                          Guarantee Agreement, the Guarantee Trustee shall deem
                          it desirable that a matter be proved or established
                          before





                                       10
<PAGE>   15


                          taking, suffering or omitting to take any action
                          hereunder, the Guarantee Trustee (unless other
                          evidence is herein specifically prescribed) may, in
                          the absence of bad faith on its part, request and
                          rely upon an Officers' Certificate which, upon
                          receipt of such request from the Guarantee Trustee,
                          shall be promptly delivered by the Guarantor.

                              (iv)  The Guarantee Trustee may consult with
                          legal counsel, and the advice or opinion of such
                          legal counsel with respect to legal matters shall be
                          full and complete authorization and protection in
                          respect of any action taken, suffered or omitted to
                          be taken by it hereunder in good faith and in
                          accordance with such advice or opinion.  Such legal
                          counsel may be legal counsel to the Guarantor or any
                          of its Affiliates and may be one of its employees.
                          The Guarantee Trustee shall have the right at any
                          time to seek instructions concerning the
                          administration of this Guarantee Agreement from any
                          court of competent jurisdiction.

                              (v)  The Guarantee Trustee shall be under no
                          obligation to exercise any of the rights or powers
                          vested in it by this Guarantee Agreement at the
                          request or direction of any Holder, unless such
                          Holder shall have provided to the Guarantee Trustee
                          such adequate security and indemnity as would satisfy
                          a reasonable person in the position of the Guarantee
                          Trustee, against the costs, expenses (including
                          attorneys' fees and expenses) and liabilities that
                          might be incurred by it in complying with such
                          request or direction, including such reasonable
                          advances as may be requested by the Guarantee
                          Trustee; provided that, nothing contained in this
                          Section 3.2(a)(v) shall be taken to relieve the
                          Guarantee Trustee, upon the occurrence of an Event of
                          Default, of its obligation to exercise the rights and





                                       11
<PAGE>   16


                          powers vested in it by this Guarantee Agreement and
                          use the same degree of care and skill in the exercise
                          thereof as a prudent person would exercise or use
                          under the circumstances in the conduct of his or her
                          own affairs.

                              (vi)  The Guarantee Trustee shall not be bound to
                          make any investigation into the facts or matters
                          stated in any resolution, certificate, statement,
                          instrument, opinion, report, notice, request,
                          direction, consent, order, bond, debenture, note,
                          other evidence of indebtedness or other paper or
                          document, but the Guarantee Trustee, in its
                          discretion, may make such further inquiry or
                          investigation into such facts or matters as it may
                          see fit.

                              (vii)  The Guarantee Trustee may execute any of
                          the trusts or powers hereunder or perform any duties
                          hereunder either directly or by or through its agents
                          or attorneys or any Affiliate, and the Guarantee
                          Trustee shall not be responsible for any misconduct
                          or negligence on the part of any such agent or
                          attorney appointed with due care by it hereunder.

                              (viii)  Whenever in the administration of this
                          Guarantee Agreement the Guarantee Trustee shall deem
                          it desirable to receive instructions with respect to
                          enforcing any remedy or right or taking any other
                          action hereunder, the Guarantee Trustee (A) may
                          request instructions from the Holders of a Majority
                          in Liquidation Preference of the Securities, (B)
                          may refrain from enforcing such remedy or right or
                          taking such other action until such instructions are
                          received, and (C) shall be protected in acting in
                          accordance with such instructions.

                              (b)  No provision of this Guarantee Agreement
shall be deemed to impose any duty or obligation on the Guarantee Trustee to
perform any act or acts





                                       12
<PAGE>   17


or exercise any right, power, duty or obligation conferred or imposed on it in
any jurisdiction in which it shall be illegal, or in which the Guarantee
Trustee shall be unqualified or incompetent in accordance with applicable law,
to perform any such act or acts or to exercise any such right, power, duty or
obligation.  No permissive power or authority available to the Guarantee
Trustee shall be construed to be a duty to act in accordance with such power
and authority.

                              SECTION 3.3.  Indemnity.  The Guarantor agrees to
indemnify the Guarantee Trustee for, and to hold it harmless against, any loss,
liability or expense incurred without negligence or bad faith on the part of
the Guarantee Trustee, arising out of or in connection with the acceptance or
administration of this Guarantee Agreement, including the reasonable costs and
expenses of defending itself against any claim or liability in connection with
the exercise or performance of any of its powers or duties hereunder.  The
Guarantee Trustee will not claim or exact any lien or charge on any Guarantee
Payment as a result of any amount due to it under this Guarantee Agreement.


                                   ARTICLE 4
                               GUARANTEE TRUSTEE

                              SECTION 4.1.  Guarantee Trustee; Eligibility. (a)
There shall at all times be a Guarantee Trustee which shall:

                              (i)  not be an Affiliate of the Guarantor; and

                              (ii)  be a Person that is eligible pursuant to
                          the Trust Indenture Act to act as such and has a
                          combined capital and surplus of at least $50,000,000,
                          and shall be a corporation meeting the requirements
                          of Section 310(a) of the Trust Indenture Act.  If
                          such corporation publishes reports of condition at
                          least annually, pursuant to law or to the
                          requirements of the supervising or examining
                          authority, then, for the purposes of this Section and
                          to the extent permitted by the Trust Indenture





                                       13
<PAGE>   18

                          Act, the combined capital and surplus of such
                          corporation shall be deemed to be its combined
                          capital and surplus as set forth in its most recent
                          report of condition so published.

                              (b)  If at any time the Guarantee Trustee shall
cease to be eligible to so act under Section 4.1(a), the Guarantee Trustee
shall immediately resign in the manner and with the effect set out in Section
4.2(c).

                              (c)  If the Guarantee Trustee has or shall
acquire any "conflicting interest" within the meaning of Section 310(b) of the
Trust Indenture Act, the Guarantee Trustee and Guarantor shall in all respects
comply with the provisions of Section 310(b) of the Trust Indenture Act.

                              SECTION 4.2.  Appointment, Removal and
Resignation of the Guarantee Trustee.  (a)  Subject to Section 4.2(b) the
Guarantee Trustee may be appointed or removed without cause at any time by the
Guarantor.

                              (b)  The Guarantee Trustee shall not be removed
until a Successor Guarantee Trustee has been appointed and has accepted such
appointment by written instrument executed by such Successor Guarantee Trustee
and delivered to the Guarantor.

                              (c)  The Guarantee Trustee appointed hereunder
shall hold office until a Successor Guarantee Trustee shall have been appointed
or until its removal or resignation.  The Guarantee Trustee may resign from
office (without need for prior or subsequent accounting) by an instrument in
writing executed by the Guarantee Trustee and delivered to the Guarantor, which
resignation shall not take effect until a Successor Guarantee Trustee has been
appointed and has accepted such appointment by an instrument in writing
executed by such Successor Guarantee Trustee and delivered to the Guarantor and
the resigning Guarantee Trustee.

                              (d)  If no Successor Guarantee Trustee shall have
been appointed and accepted appointment as provided in this Section 4.2 within
60 days after delivery to the Guarantor of an instrument of resignation, the





                                       14
<PAGE>   19


resigning Guarantee Trustee may petition, at the expense of the Guarantor, any
court of competent jurisdiction for appointment of a Successor Guarantee
Trustee.  Such court may thereupon, after prescribing such notice, if any, as
it may deem proper, appoint a Successor Guarantee Trustee.


                                   ARTICLE 5
                                   GUARANTEE

                              SECTION 5.1.  Guarantee.  The Guarantor
irrevocably and unconditionally agrees to pay in full to the Holders the
Guarantee Payments (without duplication of amounts theretofore paid by or on
behalf of the Issuer), as and when due, regardless of any defense, right of
set-off or counterclaim which the Issuer may have or assert other than the
defense of payment.  The Guarantor's obligation to make a Guarantee Payment may
be satisfied by direct payment of the required amounts by the Guarantor to the
Holders or by causing the Issuer to pay such amounts to the Holders.

                              SECTION 5.2.  Waiver of Notice and Demand.  The
Guarantor hereby waives notice of acceptance of the Guarantee Agreement and of
any liability to which it applies or may apply, presentment, demand for
payment, any right to require a proceeding first against the Guarantee Trustee,
Issuer or any other Person before proceeding against the Guarantor, protest,
notice of nonpayment, notice of dishonor, notice of redemption and all other
notices and demands.

                              SECTION 5.3.  Obligations Not Affected.  The
obligations, covenants, agreements and duties of the Guarantor under this
Guarantee Agreement shall in no way be affected or impaired by reason of the
happening from time to time of any of the following:

                              (a) the release or waiver, by operation of law or
otherwise, of the performance or observance by the Issuer of any express or
implied agreement, covenant, term or condition relating to the Trust Preferred
Securities to be performed or observed by the Issuer;

                              (b)  the extension of time for the payment by the
Issuer of all or any portion of the Dis-





                                       15
<PAGE>   20


tributions (other than an extension of time for payment of Distributions that
results from the extension of any interest payment period on the Debentures as
so provided in the Indenture), Redemption Price, Liquidation Distribution or
any other sums payable under the terms of the Trust Preferred Securities or the
extension of time for the performance of any other obligation under, arising
out of, or in connection with, the Trust Preferred Securities;

                              (c)  any failure, omission, delay or lack of
diligence on the part of the Holders to enforce, assert or exercise any right,
privilege, power or remedy conferred on the Holders pursuant to the terms of
the Trust Preferred Securities, or any action on the part of the Issuer granting
indulgence or extension of any kind;

                              (d)  the voluntary or involuntary liquidation,
dissolution, sale of any collateral, receivership, insolvency, bankruptcy,
assignment for the benefit of creditors, reorganization, arrangement,
composition or readjustment of debt of, or other similar proceedings affecting,
the Issuer or any of the assets of the Issuer;

                              (e)  any invalidity of, or defect or deficiency
in, the Trust Preferred Securities;

                              (f)  the settlement or compromise of any
obligation guaranteed hereby or hereby incurred; or

                              (g)  any other circumstance whatsoever that might
otherwise constitute a legal or equitable discharge or defense of a guarantor,
it being the intent of this Section 5.3 that the obligations of the Guarantor
hereunder shall be absolute and unconditional under any and all circumstances.

                              There shall be no obligation of the Holders or
the Guarantee Trustee to give notice to, or obtain the consent of, the
Guarantor with respect to the happening of any of the foregoing.

                              SECTION 5.4.  Rights of Holders.  The Guarantor
expressly acknowledges that: (i) this Guarantee Agreement will be deposited
with the Guarantee Trustee to be held for the benefit of the Holders; (ii) the
Guarantee Trustee has the right to enforce this Guarantee





                                       16
<PAGE>   21

Agreement on behalf of the Holders; (iii) the Holders of a Majority in
Liquidation Preference of the Securities have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
Guarantee Trustee in respect of this Guarantee Agreement or to direct the
exercise of any trust or power conferred upon the Guarantee Trustee under this
Guarantee Agreement;  (iv) any Holder may institute a legal proceeding directly
against the Guarantor to enforce its rights under this Guarantee Agreement,
without first instituting a legal proceeding against the Guarantee Trustee, the
Issuer or any other Person; and (v) if an Event of Default with respect to the
Debentures constituting the failure to pay interest or principal on the
Debentures on the date such interest or principal is otherwise payable has
occurred and is continuing, then any Holder shall have the right, which is
absolute and unconditional, to proceed directly against the Guarantor to obtain
Guarantee Payments without first waiting to determine if the Guarantee Trustee
has enforced this Guarantee Agreement or instituting a legal proceeding against
the Issuer, the Guarantee Trustee or any other Person.

                              SECTION 5.5.  Guarantee of Payment.  This
Guarantee Agreement creates a guarantee of payment and not of collection.  This
Guarantee Agreement will not be discharged except by payment of the Guarantee
Payments in full (without duplication of amounts theretofore paid by the
Issuer) or upon distribution of Debentures to Holders as provided in the Trust
Agreement.

                              SECTION 5.6.  Subrogation.  The Guarantor shall
be subrogated to all (if any) rights of the Holders against the Issuer in
respect of any amounts paid to the Holders by the Guarantor under this
Guarantee Agreement and shall have the right to waive payment by the Issuer
pursuant to Section 5.1; provided, however, that the Guarantor shall not
(except to the extent required by mandatory provisions of law) be entitled to
enforce or exercise any rights which it may acquire by way of subrogation or
any indemnity, reimbursement or other agreement, in all cases as a result of
payment under this Guarantee Agreement, if, at the time of any such payment,
any amounts are due and unpaid under this Guarantee Agreement.  If any amount
shall be paid to the Guarantor in violation of the preceding sentence, the





                                       17
<PAGE>   22

Guarantor agrees to hold such amount in trust for the Holders and to pay over
such amount to the Holders.

                              SECTION 5.7.  Independent Obligations.  The
Guarantor acknowledges that its obligations hereunder are independent of the
obligations of the Issuer with respect to the Trust Preferred Securities and
that the Guarantor shall be liable as principal and as debt or hereunder to make
Guarantee Payments pursuant to the terms of this Guarantee Agreement
notwithstanding the occurrence of any event referred to in subsections (a)
through (g), inclusive, of Section 5.3 hereof.


                                   ARTICLE 6
                          COVENANTS AND SUBORDINATION

                              SECTION 6.1.  Subordination.  The Guarantee
Agreement will constitute an unsecured obligation of the Guarantor and will
rank subordinate and junior in right of payment to all liabilities of the
Guarantor and pari passu with any guarantee now or hereafter entered into by
the Guarantor in respect of the Common Securities or of any preferred or
preference stock of any affiliate of the Guarantor.

                              SECTION 6.2.  Certain Covenants of the Guarantor.
(a)  Guarantor covenants and agrees that if and so long as (i) the Issuer is the
holder of all the Debentures, (ii) a Tax Event (as defined in the Trust
Agreement) in respect of the Issuer has occurred and is continuing and (iii) the
Guarantor has elected, and has not revoked such election, to pay Additional Sums
(as defined in the Trust Agreement) in respect of the Trust Preferred Securities
and Common Securities, the Guarantor will pay to the Issuer such Additional
Sums.

                              (b)  The Guarantor covenants and agrees that it
will not, and will not permit any subsidiary of the Guarantor to, (i) declare
or pay any dividends or distributions on, or redeem, purchase, acquire, or make
a liquidation payment with respect to, any of the Guarantor's capital stock or
(ii) make any payment of principal, interest or premium, if any, on or repay or
repurchase or redeem any debt securities (including guarantees of indebtedness
for money borrowed) of the Guarantor that rank pari passu with or junior to the





                                       18
<PAGE>   23


Debentures (other than (a) any dividend, redemption, liquidation, interest,
principal or guarantee payment by Guarantor where the payment is made by way of
securities (including capital stock) that rank pari passu with or junior to the
securities on which such dividend, redemption, interest, principal or guarantee
payment is being made, (b) payments under this Agreement, (c) purchases of
Common Stock related to the issuance of Common Stock under any of the
Guarantor's benefit plans for its directors, officers or employees, (d) as a
result of a reclassification of the Guarantor's capital stock or the exchange
or conversion of one series or class of the Guarantor's capital stock for
another series or class of the Guarantor's capital stock and (e) the purchase
of fractional interests in shares of the Guarantor's capital stock pursuant to
the conversion or exchange provisions of such capital stock or the security
being converted or exchanged) if at such time (i) there shall have occurred any
event of which the Guarantor has actual knowledge that (a) with the giving of
notice or the lapse of time, or both, would constitute an "Event of Default"
under the Indenture with respect to the Debentures and (b) in respect of which
the Guarantor shall not have taken reasonable steps to cure, (ii) the Guarantor
shall be in default with respect to its payment of any obligations under the
Guarantee or (iii) the Guarantor shall have given notice of its selection of an
Extension Period (as defined in the Indenture) with respect to the Debentures
and shall not have rescinded such notice, or such Extension Period, or any
extension thereof, shall be continuing.

                              (c)  The Guarantor covenants and agrees (i) to
maintain directly or indirectly 100% ownership of the Common Securities,
provided that certain successors which are permitted by the Indenture may
succeed to the Guarantor's ownership of the Common Securities, (ii) not to
voluntarily terminate, wind-up or liquidate the Issuer, except (a) in connection
with a distribution of the Debentures to the holders of the Trust Preferred
Securities in liquidation of the Issuer or (b) in connection with certain
mergers, consolidations or amalgamations permitted by the Trust Agreement, (iii)
to use its reasonable efforts, consistent with the terms and provisions of the
Trust Agreement, to cause the Issuer to remain classified as a grantor trust and
not as an association taxable as a corporation for United States Federal income
tax purpos-





                                       19
<PAGE>   24


es, (iv) for so long as Trust Preferred Securities are outstanding, not to
convert Debentures except pursuant to a notice of conversion delivered to the
Conversion Agent (as defined in the Trust Agreement) by a Holder, (v) to
maintain the reservation for issuance of the number of shares of Common Stock
that would be required from time to time upon the conversion of all the
Debentures then outstanding, (vi) to deliver shares of Common Stock upon an
election by the Holders to convert such Trust Preferred Securities into Common
Stock and (vii) to honor all obligations relating to the conversion or exchange
of the Trust Preferred Securities into or for Common Stock or Debentures.


                                   ARTICLE 7
                                  TERMINATION

                              SECTION 7.1.  Termination.  This Guarantee
Agreement shall terminate and be of no further force and effect upon (i) full
payment of the Redemption Price of all Trust Preferred Securities, (ii) the
distribution of Debentures to the Holders in exchange for all of the Trust
Preferred Securities, (iii) full payment of the amounts payable in accordance
with the Trust Agreement upon liquidation of the Issuer or (iv) upon the
distribution, if any, of Common Stock the holders of the Trust Preferred
Securities in respect of the conversion of all such holders' Trust Preferred
Securities into Common Stock. Notwithstanding the foregoing, this Guarantee
Agreement will continue to be effective or will be reinstated, as the case may
be, if at any time any Holder must restore payment of any sums paid with respect
to Trust Preferred Securities or this Guarantee Agreement.


                                   ARTICLE 8
                                 MISCELLANEOUS

                              SECTION 8.1.  Successors and Assigns.  All
guarantees and agreements contained in this Guarantee Agreement shall bind the
successors, assigns, receivers, trustees and representatives of the Guarantor
and shall inure to the benefit of the Holders of the Trust Preferred Securities
then outstanding.  Except in connection with a consolidation, merger or sale
involving the Guarantor that is permitted under Article Nine of the Indenture
and





                                       20
<PAGE>   25

pursuant to which the assignee agrees in writing to perform the Guarantor's
obligations hereunder, the Guarantor shall not assign its obligations
hereunder.

                              SECTION 8.2.  Amendments.  Except with respect to
any changes which do not adversely affect the rights of the Holders in any
material respect (in which case no consent of the Holders will be required),
this Guarantee Agreement may only be amended with the prior approval of the
Holders of not less than a Majority in Liquidation Preference of the
Securities.  The provisions of Article 6 of the Trust Agreement concerning
meetings of the Holders shall apply to the giving of such approval.  The
Guarantor shall furnish the Guarantee Trustee with an Officers' Certificate and
an Opinion of Counsel to the effect that any amendment of this Agreement is
authorized and permitted.

                              SECTION 8.3.  Notices.  Any notice, request or
other communication required or permitted to be given hereunder shall be in
writing, duly signed by the party giving such notice, and delivered, telecopied
or mailed by first class mail as follows:  (a)  if given to the Guarantor, to
the address set forth below or such other address as the Guarantor may give
notice of to the Holders:

                             CMS Energy Corporation
                             Fairlane Plaza South
                             330 Town Center Drive, Suite 1100
                             Dearborn, MI  48126
                             Phone No.:      (313) 436-9200
                             Facsimile No.:  (313) 436-9225
                             Attention:  General Counsel

                              (b)  if given to the Issuer, in care of the
Guarantee Trustee, at the Issuer's (and the Guarantee Trustee's) address set
forth below or such other address as the Guarantee Trustee on behalf of the
Issuer may give notice of to the Holders:

                             CMS Energy Financial Trust IV
                             c/o CMS Energy Corporation
                             Fairlane Plaza South
                             330 Town Center Drive, Suite 1100
                             Dearborn, MI  48126
                             Phone No.:      (313) 436-9200





                                       21
<PAGE>   26

                          Facsimile No.:  (313) 436-9225
                          Attention:  General Counsel

     with a copy to:

                          The Bank of New York
                          101 Barclay Street
                          Floor 21W
                          New York, New York  10286
                          Phone No.:      [To Come]
                          Facsimile No.:  [To Come]
                          Attention:  [To Come]

                              (c)  if given to any Holder, at the address set
forth on the books and records of the Issuer.

                              All notices hereunder shall be deemed to have
been given when received in person, telecopied with receipt confirmed, or
mailed by first class mail, postage prepaid, except that if a notice or other
document is refused delivery or cannot be delivered because of a changed
address of which no notice was given, such notice or other document shall be
deemed to have been delivered on the date of such refusal or inability to
deliver.

                              SECTION 8.4.  Benefit.  This Guarantee Agreement
is solely for the benefit of the Holders and is not  separately transferable
from the Trust Preferred Securities.

                              SECTION 8.5.  Interpretation.  In this Guarantee
Agreement, unless the context otherwise requires:

                          (a)  capitalized terms used in this Guarantee
Agreement but not defined in the preamble hereto have the respective meanings
assigned to them in Section 1.1;

                          (b)  a term defined anywhere in this Guarantee
Agreement has the same meaning throughout;

                          (c)  all references to "the Guarantee Agreement" or
"this Guarantee Agreement" are to this Guarantee Agreement as modified,
supplemented or amended from time to time;





                                       22
<PAGE>   27


                          (d)  all references in this Guarantee Agreement to
Articles and Sections are to Articles and Sections of this Guarantee Agreement
unless otherwise specified;

                          (e)  a term defined in the Trust Indenture Act has
the same meaning when used in this Guarantee Agreement unless otherwise defined
in this Guarantee Agreement or unless the context otherwise requires;

                          (f)  a reference to the singular includes the plural
and vice versa; and

                          (g)  the masculine, feminine or neuter genders used
herein shall include the masculine, feminine and neuter genders.





                                       23
<PAGE>   28

                              SECTION 8.6.  Governing Law.  THIS GUARANTEE
AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF MICHIGAN WITHOUT REGARD TO THE CONFLICT OF LAW
PRINCIPLES THEREOF.

                              This instrument may be executed in any number of
counterparts, each of which so executed shall be deemed to be an original, but
all such counterparts shall together constitute but one and the same
instrument.

                              THIS GUARANTEE AGREEMENT is executed as of the
day and year first above written.


                                                CMS ENERGY CORPORATION



                                                By: ____________________________
                                                    Name:
                                                    Title:


                                                THE BANK OF NEW YORK, as
                                                Guarantee Trustee



                                                By: ____________________________
                                                    Name:
                                                    Title:





                                       24