----------------------
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549
                               ------------------

                                   FORM 10-K/A

[X]      Annual  report  pursuant  to  Section  13 or  15(d)  of the Securities
         Exchange Act of 1934 for the fiscal year ended December 31, 2003

[ ]      Transition report pursuant to Section 13 or 15(d) of the
         Securities Exchange Act of 1934 for the transition period from   to


                                      Commission File Number  333-100818-08

                         GS MORTGAGE SECURITIES CORP
             (Exact name of registrant as specified in its charter)


       Delaware                                       13-6357101
 (State or other jurisdiction of               (IRS Employer Identification No.)
     incorporation)

85 Broad Street
New York, NY                                                    10004
(Address of principal executive offices)                (Zip Code)

Registrant's telephone number, including area code :  (212) 902-1000

                         GSR Mortgage Loan Trust 2003-4F
               Mortgage Pass-Through Certificates, Series 2003-4F
            (Title of each class of securities covered by this Form)

Securities registered pursuant to Section 12(b) of the Act:  None
Securities registered pursuant to Section 12(g) of the Act:  None

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes [X] No [ ]

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [X]

Indicate by check mark whether the registrant is an accelerated filer (as
defined in Exchange Act Rule 12b-2). Yes [ ] No [X]

                   Documents incorporated by reference: None


<PAGE>



PART IV

Item 15. Exhibits, Financial Statement Schedules, and Reports on Form 8-K

(c) Exhibits to this report.

     Annual  Independent  Accountant's  Servicing  Report  concerning  servicing
activities filed as Exhibit 99.1 hereto.

     Report of Management as to Compliance with Minimum Servicing  Standards for
filed as Exhibit 99.2 herto.





<PAGE>


GSR Mortgage Loan Trust 2003-4F
Mortgage Pass-Through Certificates, Series 2003-4F
-----------------------------------------------------------------------

SIGNATURE

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned thereunto duly authorized.



Date: April 27, 2004             By:   /s/ Janet Bell
      ----------------------             --------------------------------------
                                  Name:  Janet Bell
                                 Title:  Chief Executive Officer



<PAGE>
                            DEPOSITOR CERTIFICATION

     Re: GSR Mortgage  Loan Trust 2003-4F (the  "Trust")  Mortgage  Pass-Through
Certificates,  Series 2003-4F, issued pursuant to the Trust Agreement,  dated as
of February 1, 2003 (the  "Trust  Agreement"),  among  JPMorgan  Chase Bank,  as
trustee (the  "Trustee"),  and GS Mortgage  Securities  Corp., as depositor (the
"Depositor"),  and  serviced by Wells  Fargo Home  Mortgage,  Inc.,  Fifth Third
Mortgage  Company,  Bank of America,  N.A. and National  City  Mortgage Co. (the
"Servicers")  pursuant to the respective  servicing  agreement  (the  "Servicing
Agreement").

I, Janet Bell , certify that:

     1. I have reviewed this annual report on Form 10-K/A ("Annual Report"), and
all reports on Form 8-K containing  distribution reports (collectively with this
Annual Report,  the "Reports")  filed in respect of periods included in the year
covered by this Annual Report, of the Trust;

     2. Based on my knowledge, the information in the Reports, taken as a whole,
does not  contain  any untrue  statement  of a material  fact or omit to state a
material  fact  necessary  to  make  the  statements   made,  in  light  of  the
circumstances  under which such  statements  were made, not misleading as of the
last day of the period covered by this Annual Report;

     3.  Based  on my  knowledge,  the  distribution  or  servicing  information
required  to be  provided  to the  Trustee  by the  Servicers  under  the  Trust
Agreement and Servicing Agreements,  for inclusion in the Reports is included in
the Reports;

     4. Based on my knowledge and upon the annual compliance  statement included
in this Annual  Report and required to be delivered to the Trustee in accordance
with the terms of the  Servicing  Agreements,  and  except as  disclosed  in the
Reports,  the Servicers have  fulfilled  their  obligations  under the Servicing
Agreements; and

     5. The  Reports  disclose  all  significant  deficiencies  relating  to the
Servicer's compliance with the minimum servicing standards based upon the report
provided by an  independent  public  accountant,  after  conducting  a review in
compliance with the Uniform Single  Attestation  Program for Mortgage Bankers or
similar  procedure,  as set forth in the Trust  Agreement,  that is  included in
the Reports.

     In giving the certifications above, I have reasonably relied on information
provided  to me by the  following  unaffiliated  parties:  the  Trustee  and the
Servicers.


     Date: April 27, 2004
           --------------------------------

       By:   /s/ Janet Bell
            --------------------------------------
     Name:  Janet Bell
     Title: Chief Executive Officer



<page>



                                 EXHIBIT INDEX

Exhibit     Description

99.1    Annual Independent Accountants' Servicing Report
           National City Mortgage Co., as Servicer

99.2   Report of Management as to Compliance with Minimum Servicing  Standards
           National City Mortgage Co., as Servicer





<PAGE>


                                  EXHIBIT 99.1
                Annual Independent Accountant's Servicing Report
                        -------------------------------

Ernst & Young LLP
1300 Huntington Building
Cleveland, Ohio

                 Report on Management's Assertion on Compliance
         with the Specified Minimum Servicing Standards Set Forth in the
             Uniform Single Attestation Program for Mortgage Bankers

                        Report of Independent Accountants


Board of Directors
National City Mortgage Co.

     We have  examined  management's  assertion,  included  in the  accompanying
report  titled  Report of  Management,  that  National  City  Mortgage Co. (NCM)
complied with the servicing  standards  identified in Exhibit A to the Report of
Management  (the  specific  minimum  servicing  standards)  as set  forth in the
Mortgage Bankers Association of America's Uniform Single Attestation Program for
Mortgage Bankers (USAP) during the year-ended  December 31, 2003.  Management is
responsible for NCM's compliance with the specified minimum servicing standards.
Our  responsibility  is to express an opinion on management's  assertions  about
NCM's compliance based on our examination.

     Our  examination  was  made  in  accordance  with   attestation   standards
established  by the  American  Institute of Certified  Public  Accountants  and,
accordingly,   included  examining,  on  a  test  basis,  evidence  about  NCM's
compliance with the specified  minimum  servicing  standards and performing such
other  procedures as we considered  necessary in the  circumstances.  We believe
that  our  examination   provides  a  reasonable  basis  for  our  opinion.  Our
examination  does not provide a legal  determination  on NCM's  compliance  with
specified minimum servicing standards.

     In  our  opinion,   management's  assertion  that  NCM  complied  with  the
aforementioned  specified  minimum  servicing  standards  during  the year ended
December 31, 2003, is fairly stated, in all material respects.


Ernst & Young LLP

February 25, 2004




<page>



                                  EXHIBIT 99.2
     Report of Management as to Compliance with Minimum Servicing Standards
                                  -----------



National City Mortgage Co.
3232 Newmark Drive
Miamisburg, Ohio  45342
telephone (937) 910-1200


         Management's Assertion on Compliance with the Specified Minimum
        Servicing Standards Set Forth in the Uniform Single Attestation
                          Program for Mortgage Bankers

                              Report of Management

     We, as members of  management  of National  City  Mortgage Co.  (NCM),  are
responsible  for  complying  with  the  servicing  standards  identified  in the
attached Exhibit A (the specified minimum  servicing  standards) as set forth in
the Mortgage Bankers Association of America's Uniform Single Attestation Program
for Mortgage  Bankers  (USAP).  We are also  responsible  for  establishing  and
maintaining  effective  internal  control over  compliance  with these specified
minimum servicing standards. We have performed an evaluation of NCM's compliance
with the specified minimum  servicing  standards as of December 31, 2003 and for
the year then ended.  Based on this  evaluation,  we assert that during the year
ended  December 31, 2003,  NCM  complied,  in all  material  respects,  with the
specified minimum servicing standards set forth in the USAP.

     As of December  31,  2003 and for the year then ended,  NCM had in effect a
fidelity  bond policy in the amount of $200 million and an errors and  omissions
policy in the amount of $200 million.


/s/  Steven M. Scheid
-----------------------
Steven M. Scheid
Senior Vice President


February 25, 2004

<page>

                                   Exhibit A

                     Specified Minimum Servicing Standards


I.   Custodial Bank Accounts

1.   Reconciliations shall be prepared on a monthly basis for all custodial bank
     accounts and related bank clearing accounts. These reconciliations shall:

        a.   be mathematically accurate;

        b.   be prepared within forty-five (45) calendar days after the cutoff
             date. The cutoff  date is the date as of which a bank  account  is
             reconciled  every  month. It may, or may not, coincide with a
             prescribed  investor  reporting date but shall be consistent from
             period to period;

        c.   be reviewed and approved by someone  other than the person who
             prepared the reconciliation; and

        d.   document  explanations for reconciling items. These reconciling
             items shall  be  resolved   within  ninety  (90) calendar days  of
             their original  identification.

2.   Funds of the servicing  entity shall be advanced in cases where there is an
     overdraft in an investor's or a mortgagor's account.

3.   Each  custodial   account  shall  be  maintained  at  a  federally  insured
     depository institution in trust for the applicable investor.

4.   Escrow  funds  held in  trust  for a  mortgagor  shall be  returned  to the
     mortgagor within thirty (30) calendar days of payoff of the mortgage loan.

II.  Mortgage Payments

1.   Mortgage  payments  shall be deposited into the custodial bank accounts and
     related bank clearing accounts within two (2) business days of receipt.

2.   Mortgage  payments made in accordance with the  mortgagor's  loan documents
     shall be posted to the applicable mortgagor records within two (2) business
     days of receipt.

3.   Mortgage  payments  shall be allocated to principal,  interest,  insurance,
     taxes or  other  escrow  items in  accordance  with  the  mortgagor's  loan
     documents.

4.   Mortgage  payments  identified  as  loan  payoffs  shall  be  allocated  in
     accordance with the mortgagor's loan documents.

III. Disbursements

1.   Disbursements  made via wire  transfer on behalf of a mortgagor or investor
     shall be made only by authorized personnel.

2.   Disbursements  made on behalf of a mortgagor  or  investor  shall be posted
     within two (2)  business  days to the  mortgagor's  or  investor's  records
     maintained by the servicing entity.

3.   Tax and  insurance  payments  shall be made on or  before  the  penalty  or
     insurance policy  expiration dates, as indicated on tax bills and insurance
     premium notices, respectively, provided that such support has been received
     by the  servicing  entity at least thirty (30) calendar days prior to these
     dates.

4.   Any late payment  penalties paid in conjunction with the payment of any tax
     bill or insurance premium notice shall be paid from the servicing  entity's
     funds and not charged to the mortgagor,  unless the late payment was due to
     the mortgagor's error or omission.

5.   Amounts  remitted to investors per the  servicer's  investor  reports shall
     agree with cancelled  checks,  or other form of payment,  or custodial bank
     statements.

6.   Unissued checks shall be safeguarded so as to prevent unauthorized access.

IV.  Investor Accounting and Reporting

1.   The servicing  entity's investor reports shall agree with, or reconcile to,
     investors'  records  on a monthly  basis as to the total  unpaid  principal
     balance and number of loans serviced by the servicing entity.

V.   Mortgagor Loan Accounting

1.   The servicing entity's mortgage loan records shall agree with, or reconcile
     to, the records of mortgagors with respect to the unpaid principal  balance
     on a monthly basis.

2.   Adjustments on adjustable rate mortgage (ARM) loans shall be computed based
     on the related mortgage note and any ARM rider.

3.   Escrow accounts shall be analyzed,  in accordance with the mortgagor's loan
     documents, on at least an annual basis.

4.   Interest on escrow  accounts  shall be paid, or credited,  to mortgagors in
     accordance with the applicable state laws.

VI.  Delinquencies

1.   Records  documenting  collection  efforts  shall be  maintained  during the
     period a loan is in default  and shall be undated  at least  monthly.  Such
     records shall  describe the entity's  activities  in monitoring  delinquent
     loans  including,  for example,  phone calls,  letters and mortgage payment
     rescheduling  plans in cases  where the  delinquency  is  deemed  temporary
     (i.e., illness or unemployment).

VII. Insurance Policies

1.   A fidelity bond and errors and  omissions  policy shall be in effect on the
     servicing entity  throughout the reporting period in the amount of coverage
     represented to investors in management's assertion.