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Exhibit 10(m)
 GENERAL MOTORS
SUPPLEMENTAL EXECUTIVE RETIREMENT PROGRAM
(As amended through October 18, 2005)
  SECTION I. Purpose of the Program
  SECTION II. Administration of the Program
 (a)
    
    This Program shall at all times be maintained, considered, and administered as a
non-qualified plan that is wholly separate and distinct from the Retirement Program and the
BEP-R. Moreover, it shall be maintained as an unfunded Program providing deferred
compensation for a select group of management or highly-compensated employees under Section
201(2) of ERISA.(b)
    
    Benefits under this Program are not guaranteed.(c)
    
    The Corporation is the Plan Administrator. The Plan Administrator has final discretionary
authority to construe, interpret, apply, and administer the Program and serves as the final
step of the Program appeal procedure. Any interpretation or determination regarding the
Program made by the Plan Administrator shall be given full force and effect; unless it is
proven that the interpretation or determination was arbitrary and capricious.(d)
    
    Any and all decisions of the Plan Administrator as to interpretation or application of this
Program shall be final, conclusive and binding upon all parties, including the Corporation,
the stockholders, and the participants and beneficiaries of the Program.(e)
    
    The Plan Administrator shall have the full power to engage and employ such legal, actuarial,
auditing, tax, and other such agents, as it shall, in its sole discretion, deem to be in the
best interest of the Corporation, the Program, and its participants and beneficiaries.(f)
    
    The expenses of administering this Program are borne by the Corporation and are not charged
against its participants and beneficiaries.(g)
    
    Various aspects of Program administration have been delegated to the Program recordkeeper
selected by the Plan Administrator. In carrying out its delegated responsibilities, the
Program recordkeeper shall have discretionary authority to construe, interpret, apply, and
administer the Program provisions. The discretionary




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authority delegated to the Program recordkeeper shall, however, be limited to
the Program terms relevant to its delegated responsibilities and shall not permit the Program
recordkeeper to render a determination or to make any representation concerning benefits which
are not provided by the express terms of the Program. The Program recordkeepers actions
shall be given full force and effect unless determined by the Plan Administrator to be
contrary to the Program provisions or arbitrary and capricious.
 (h)
    
    For purposes of the Program, a Plan Year shall mean the 12-month period beginning January 1
and ending December 31.
 SECTION III. Effective Date
 
 SECTION IV. Eligibility
 (a)
    
    To be eligible for a benefit under this Program, an executive employee must meet the
following requirements:
 (1)
    
    be a regular or Flexible Service U.S. or U.S. International Service Personnel
executive employee at the date of retirement or death;(2)
    
    have at least 10 years of Retirement Program Part B or Part C credited service; and
 (b)
    
    To be eligible for a Regular SERP Benefit under the Regular SERP Formula, an executive
employee must:
 (1)
    
    be at least 62 years old at retirement; or(2)
    
    be at least 55 years old at time of total and permanent disability retirement under
the Retirement Program; or(3)
    
    be at least 55 years old at time of death.(4)
    
    General Motors Asset Management executives who are transferred to GMAM or hired or
promoted into executive status on or after August 4, 2003 are only eligible for Regular
Formula SERP benefits.
 (c)
    
    To be eligible for an Alternative SERP Benefit under the Alternative SERP Formula, an
executive employee must:
 (1)
    
    Have been at work for GM on or after October 2, 1989, and(2)
    
    be at least 62 years old at retirement; or(3)
    
    be actively at work on or after November 1, 2005 and at least age 60 at time of
death; or(4)
    
    be actively at work on or after November 1, 2005 and at least age 60 at time of
total and permanent disability retirement under the Retirement Program.(5)
    
    Executives will not be eligible to grow into benefits based upon the Alternative
SERP Formula from layoff status or any long-term leave of absence.(6)
    
    General Motors Asset Management executives who are transferred to GMAM or hired or
promoted into executive status on or after August 4, 2003 are ineligible for Alternative
Formula SERP benefits.
 (d)
    
    The following classes of individuals are ineligible to participate in the Program regardless
of any other Program terms to the contrary, and regardless of whether the individual is a
common-law employee of the Corporation:
 (1)
    
    Any individual who provides services to the Corporation where there is an agreement
with a separate company under which the services are provided. Such individuals are
commonly referred to by the Corporation as contract employees or bundled-services
employees;




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(2)
    
    Any individual who has signed an independent contractor agreement, consulting
agreement, or other similar personal services contract with the Corporation;(3)
    
    Any individual that the Corporation, in good faith, classifies as an independent
contractor, consultant, contract employee, or bundled-services employee during the period
the individual is so classified by the Corporation.
 The purpose of this provision is to exclude from participation in the Program all
persons who actually may be common-law employees of the Corporation, but are not paid as
though they are employees of the Corporation regardless of the reason they are excluded
from the payroll, and regardless of whether the exclusion is correct.(e)
    
    Until age 70, any retired executive employee receiving an Alternative SERP benefit under the
Alternative SERP Formula is prohibited from all activity that is competitive with the
Corporation and/or otherwise acting in any manner inimical or contrary to the best interests
of the Corporation. Alternative SERP benefits may be suspended if a retired executive does
not respond to the Corporations request for information relating to this paragraph. If any
such executive violates these conditions precedent, the executive and his/her beneficiaries
thereafter lose eligibility for any benefits based upon the Alternative SERP Formula,
commencing with the date of initial violation. While the conditions precedent identified
above (i.e., prohibit working for a competitor and/or otherwise acting in any manner inimical
or contrary to the best interests of the Corporation) are not now conditions to the receipt of
Regular SERP benefits, the Corporation reserves the right to impose prohibitions and
conditions precedent to the receipt of Regular SERP benefits at any time and without prior
notice.(f)
    
    An executive who is subject to automatic retirement at age 65 under the terms of the
Retirement Program must be approved by the Executive Compensation Committee of the Board of
Directors to be eligible for SERP benefits under this Program for retirement at ages 62-64.
 SECTION V. Amount of Benefits Under the Regular Formula of the Program
 (a)
    
    The monthly benefit under the Regular formula of this Program is an amount equal to two
percent (2%) of average monthly base salary for the highest 60 of the 120 months immediately
preceding retirement, multiplied by the years of credited service used to determine the Part B
Supplementary benefit or the Part C benefit under the Retirement Program, less the sum of (1)
all monthly benefits payable under the Retirement Program and BEP-R (if any), including the
annuitized value of the Part C benefit, prior to reduction for the cost of any survivor
coverage, (2) two percent (2%) of the maximum Primary Social Security benefit payable
(regardless of actual receipt) in the year of retirement multiplied by the employees years of
Part A or Part C credited service under the Retirement Program, and (3) any benefits payable
under certain other GM-provided benefit programs, such as Extended Disability Benefits.(b)
    
    The Special Benefit provided under the GM Health Care Program is not taken into account in
determining any monthly benefit amount payable hereunder.(c)
    
    For purposes of this Section V, average monthly base salary means the monthly average of base
salary for the highest 60 of the 120 months immediately preceding retirement.(d)
    
    The monthly Social Security offset amount will be based upon the maximum Primary Social
Security benefit in the year the executive retires, regardless of the executives age at
retirement or availability to him/her of a




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Social Security benefit. The Social Security offset
amount determined at retirement is not re-determined for any subsequent Social Security
increase.
 (e)
    
    Any post-retirement increase under the Retirement Program does not reduce any monthly benefit
payable under this Program. For purposes of this subsection, adjustments to the IRC Section
415 limits are not considered post-retirement increases.(f)
    
    Benefits payable under the Regular Formula to a surviving spouse are detailed in Section
VIII.
 SECTION VI. Amount of Benefits Under the Alternative Formula of the Program
 (a)
    
    Under the Program, of which this Alternative Formula is a part, an eligible retiring
executive is entitled to the greater of the monthly benefit, if any, generated through either
(1) the Alternative Formula, as described hereinafter, or (2) the Regular SERP formula
described in Section V.(b)
    
    The effective date of this formula is for retirements with benefits payable commencing on or
after November 1, 1989.(c)
    
    The monthly benefit level provided hereunder will equal 1.5% of average total direct
compensation (monthly base salary plus average monthly annual incentive compensation, as
defined in Section VI(e) below), multiplied by years of credited service (35-year maximum)
used to determine the Part B supplementary benefit or the Part C benefit under the Retirement
Program, less the sum of (1) all monthly benefits payable under the Retirement Program and
BEP-R (if any), including the annuitized value of the Part C benefit, prior to reduction for
the cost of any survivor coverage, (2) 100% of the maximum Primary Social Security benefit
payable (regardless of actual receipt) in the year of retirement, and (3) any benefits payable
under certain other GM-provided programs, such as Extended Disability Benefits.(d)
    
    The Special Benefit payable under the Health Care Program is not taken into account in
determining any monthly benefit amount payable hereunder.(e)
    
    For purposes of this Section VI, average monthly base salary means the monthly average of
base salary for the highest 60 of the 120 months immediately preceding retirement. Average
monthly incentive compensation means an amount determined by dividing the total of the highest
five of the last ten years of annual incentive awards, by 60. Each annual incentive award
amount is the final award amount related to the performance period year for which it was
awarded, not the amount that is subsequently paid. Awards related to the year of retirement
will not be used in the calculation for retirements before October 1, 2005. For retirements
on or after that date, awards related to the year of retirement may be included provided they
are based on a full 12 month performance period, such as in the case of awards based on fiscal
year performance periods ending other than on December 31. where the effective date of
retirement is after that date but before year end. Moreover, neither Performance Achievement
Plan awards, Stock Performance Program awards, Stock Incentive Plan grants, nor any other form
of payment, are eligible for inclusion in determining an Alternative Formula monthly benefit
amount. Non-consecutive years within the last ten years of employment may be used for
determining the blended amount of average monthly (1) base salary, and (2) incentive
compensation.(f)
    
    The monthly Social Security offset amount will be based upon the maximum Primary Social
Security benefit in the year the executive retires, regardless of the executives age at
retirement or availability to him/her of a Social Security benefit. The Social Security
offset amount determined at retirement is not re-determined for any subsequent Social Security
increase.




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(g)
    
    Any post-retirement increase under the Retirement Program does not reduce any monthly benefit
payable under this Program. For purposes of this subsection, adjustments to the IRC Section
415 limits are not considered post-retirement increases.(h)
    
    Benefits payable under the Alternative Formula to a surviving spouse are detailed in Section
VIII.
 SECTION VII. Payment of Benefits
 (a)
    
    Payment of benefits, in the monthly amount determined pursuant to Section V or VI of this
Program, are payable in accordance with the terms and conditions established by the Plan
Administrator.(b)
    
    The payment of benefits under this Program shall be reduced by the amount that a Participant
owes the Corporation or any subsidiary, for any reason, including benefit overpayments, wage
overpayments, and amounts due under all incentive compensation plans. The Participant will be
relieved of liability in the amount of the reduction following the payment to the Corporation.
 SECTION VIII. Surviving Spouse Benefits
 (a)
    
    In lieu of the monthly SERP benefit otherwise payable, an employee who retires, and is
eligible for a SERP retirement benefit, shall be deemed to have elected automatically a
reduced amount of monthly SERP benefit to provide that, if the designated spouse shall be
living at the employees death after such election shall have become effective, a survivor
benefit shall immediately be payable to such spouse commencing on the first of the month
following the employees death and such survivor benefit shall be payable during the spouses
further lifetime. Written consent of the spouse witnessed by a Notary Public is required if
the employee rejects the SERP surviving spouse coverage.(b)
    
    If an executive employee who is eligible for benefits under this Program dies in service on
or after having attained age 55, but prior to having attained age 62, and such executive would
have been eligible to retire voluntarily under the terms of the Retirement Program on the date
of his or her death, then the eligible surviving spouse1 of such executive shall be
eligible to receive a 65% (60% for retirements prior to October 1, 1999) surviving spouse
benefit based upon the Regular SERP Formula.(c)
    
    If an executive employee who is eligible for benefits under this Program dies in service on
or after having attained age 60, but prior to having attained age 62, and such executive would
have been eligible to retire voluntarily under the terms of the Retirement Program on the date
of his or her death, then the eligible surviving spouse1 of such executive shall be
eligible to receive a 65% surviving spouse benefit based upon the Alternative SERP Formula(d)
    
    No election of surviving spouse coverage may be made after retirement.(e)
    
    Any such survivor benefit will be equal to 65% (60% for retirements prior to October 1, 1999)
of the reduced monthly SERP amount otherwise payable to the deceased retiree or employee. Any
such reduction applicable to the retirees benefit is 5% if the age of the employee and the
age of the spouse are within five years of each other. The 5% is increased by 1/2 percent
(1/2%) for each full year over five years the spouse is younger than the
 
 1
    
    In order for a surviving spouse to be eligible
to receive surviving spouse benefits under this Program, the surviving spouse
must have been married to the executive employee on the date of his or her
death for a period of not less than one year.




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(f)
    
    In the event the spouse predeceases the executive, the cost for surviving spouse coverage
will not be restored.(g)
    
    If a Program eligible retiree is not receiving a SERP benefit due to eligibility to receive
benefits under the Retirement Program and other GM-provided plans which exceed the SERP target
benefit level, the accrued cost of the surviving spouse benefit described in this Section VIII
will be recovered in full before the retiree is first entitled to receive benefits under this
Program.
 SECTION IX. Amendment, Modification, Suspension, or Termination by Corporation
 (a)
    
    The Corporation reserves the right, by and through the Executive Compensation Committee of
the Board of Directors or its delegate, to amend, modify, suspend, or terminate this Program
in whole or in part, at any time. No oral statements can change the terms of this Program.
This Program can only be amended, in writing, by the Board of Directors, the Executive
Compensation Committee, or an appropriate individual or committee as designated by the Board
of Directors or Executive Compensation Committee. Absent an express delegation of authority
from the Board of Directors or the Executive Compensation Committee, no one has the authority
to commit the Corporation to any benefit or benefits provision not provided for under this
Program or to change the eligibility criteria or other provisions of this Program.(b)
    
    The Corporation may, from time-to-time and in its sole discretion, adopt limited early
retirement provisions to provide retirements (i) during a specified period of time, (ii) at a
specified level of benefits, and (iii) for identified executive employees. Any such early
retirement provisions that may be adopted by the Corporation are made a part of this Program
as though set out fully herein.(c)
    
    The Corporation may, from time-to-time and in its sole discretion, adjust the amount of an
executives credited service used to determine the benefits under this Program, or the amount
of benefits payable to an executive under this Program.
 SECTION X. Claim Denial Procedures
  SECTION XI. Service of Legal Process




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SECTION XII. Named Fiduciary
  SECTION XIII. Non-Assignability