EXHIBIT 99.5

                                  March 2, 2004

Credit Suisse First Boston International
One Cabot Square
London E14 4QJ
England

    RE: Form of Confirmation of Primary Swap Relating to the Class A-1 Notes

Dear Ladies and Gentlemen:

         The purpose of this letter agreement is to confirm the terms and
conditions of the Swap Transaction (the "Primary Swap") entered into between
Credit Suisse First Boston International (the "Counterparty") and Capital Auto
Receivables Asset Trust 2004-1 (the "Trust") as of the Trade Date listed below
(the "Transaction"). This letter constitutes a "Confirmation" as referred to in
the Primary ISDA Agreement specified below.

1.       The definitions and provisions contained in the 2000 ISDA Definitions
         (the "Definitions"), as published by the International Swaps and
         Derivatives Association, Inc. ("ISDA"), are incorporated into this
         Confirmation. In the event of any inconsistency between those
         definitions and provisions and this Confirmation, this Confirmation
         will govern. The parties agree that this transaction is a Transaction
         under the ISDA Master Agreement of the parties dated as of March 2,
         2004. The agreement is comprised of the printed form of such agreement
         as published by ISDA, as supplemented and modified by a Schedule (the
         "Primary ISDA Agreement").

         This Confirmation constitutes a binding agreement between you and us
         and will supplement, form a part of, and be subject to the Primary ISDA
         Agreement described above as amended and supplemented from time to
         time.

         The Counterparty and the Trust acknowledge that this Transaction
         relates to the Class A-1 Floating Rate Asset Backed Notes (the
         "Reference Notes") issued by the Trust for value pursuant to and
         subject to the Indenture.

         Capitalized terms used and not otherwise defined herein, in the Primary
         ISDA Agreement or in the Definitions shall have the meanings assigned
         to them in Exhibit A or Exhibit B hereto, as applicable.

         All references to "dollars" or to "$" shall be references to amounts in
         United States Dollars.

2.       The terms of the particular Transaction to which this Confirmation
         relates are as follows:

         Type of Transaction:  Interest Rate Swap.

         Notional Amount: $553,000,000 with respect to the initial Calculation
         Period. The Notional Amount with respect to each Calculation Period
         thereafter shall be equal to the Reference Note Balance as of the close
         of business on the Distribution Date at the beginning of the relevant
         Calculation Period (as set forth in the Calculation Statement (defined
         below) delivered by GMAC to the Counterparty on or prior to the
         Determination Date relating to such Calculation Period pursuant to
         Section 3 below).

         Trade Date: February 19, 2004.

         Effective Date: March 2, 2004.



         Termination Date: The earlier of the close of business on (i) March 15,
         2005, and (ii) the Fixed Rate Payer Payment Date on which the Notional
         Amount is reduced to zero.

         Fixed Amounts:

                  Fixed Rate Payer:  The Trust.

                  Fixed Rate Payer Period End Dates: The 15th calendar day of
                  each month, commencing April 15, 2004 to and including the
                  Termination Date, in each case, subject to adjustment in
                  accordance with the Following Business Day Convention.

                  Fixed Rate Payer Payment Date: With respect to each
                  Calculation Period, the day that is one Business Day prior to
                  the first Distribution Date to occur following the last day of
                  such Calculation Period.

                  Fixed Rate: 1.245%.

                  Fixed Rate Day Count Fraction: 30/360.

         Floating Amounts:

                  Floating Rate Payer: The Counterparty.

                  Floating Rate Payer Period End Dates: Each Fixed Rate Payer
                  Period End Date.

                  Floating Rate Payer Payment Dates: Each Fixed Rate Payer
                  Payment Date.

                  Reset Dates: With respect to each Calculation Period, the
                  first day of such Calculation Period.

                  Floating Rate Option: LIBOR (as defined in Exhibit A hereto).

                  Spread: 6 Basis Points.

                  Floating Rate Day Count Fraction: Actual/360.

                  Compounding: Inapplicable.

         Business Days for Payment: New York (New York), Detroit (Michigan) and
         Chicago (Illinois).

         Calculation Agent: The Trust, or General Motors Acceptance Corporation,
         as agent for and on behalf of the Trust.

         Default Rate: For any United States Dollar payments, the rate
         determined under the option entitled "USD Federal Funds - H.15" plus 1%
         using daily Reset Dates. The Default Rate will be applied on the basis
         of Compounding as if the overdue amount were a Notional Amount and
         using daily Compounding Dates, and interest will accrue and be payable
         before as well as after judgment.

3.       Calculations and Notifications: On or before each Determination Date,
         the Calculation Agent shall determine the Fixed Amount due to the
         Counterparty on the next succeeding Fixed Rate Payer Payment Date and
         the Floating Amount due to the Trust on the next succeeding Floating
         Rate Payer Payment Date and the Calculation Agent shall notify the
         Counterparty in writing of both (i) the Floating Rate and (ii) the
         amount of such payment.

                                       2


         In addition, on each Determination Date the Trust shall deliver to the
         Counterparty (by facsimile with hard copy to follow) a statement (the
         "Calculation Statement") setting forth with respect to the close of
         business on the immediately preceding Distribution Date the Reference
         Note Balance as of such Distribution Date.

         The Trust will give the Counterparty prompt written notice of any
         Default under the Indenture.

4.       Credit Downgrade: In the event that the Joint Probability is reduced
         below AA- in the case of S&P or Aa3, in the case of Moody's, the
         Counterparty shall promptly notify the Trust (and any permitted
         assignee or transferee of the Trust) and GMAC of such event and
         (unless, within thirty (30) days after such reduction, the applicable
         Rating Agency has reconfirmed the ratings of the Reference Notes and
         the Other Securities that were in effect immediately prior to such
         reduction) the Counterparty shall within thirty (30) days of receipt of
         notice of such reduction, with the prior written confirmation of the
         applicable Rating Agency that such arrangement will not result in the
         reduction of the rating of any of the Reference Notes or the Other
         Securities existing immediately prior to the reduction of the
         applicable Joint Probability, either:

                  (1) (x) obtain a substitute swap provider (the "Substitute
                  Swap Provider") acceptable to the Trust (such acceptance not
                  to be unreasonably withheld) and replace this Transaction with
                  a swap transaction on substantially similar terms or with such
                  other amendments as consented to in writing by the Trust
                  (which consent shall not be unreasonably withheld), provided
                  such replacement would result in an S&P Joint Probability of
                  at least AA- and a Moody's Joint Probability of at least Aa3,
                  except that such Substitute Swap Provider shall thenceforth be
                  the "Counterparty" hereunder; or (y) replace, with the consent
                  of the then current Offsetting Counterparty, the swap
                  transaction with the then current Offsetting Counterparty with
                  a swap transaction with a replacement Offsetting Counterparty
                  or enter into a swap transaction with another party such that
                  such party shall be acting as an intermediary between the
                  Counterparty and the then current Offsetting Counterparty
                  (such replacement or intermediary being the "Replacement
                  Offsetting Counterparty"), in either case on terms approved by
                  S&P and Moody's; or

                  (2) enter into an ISDA Credit Support Annex with the Trust
                  mutually acceptable to the Trust and the Counterparty and, if
                  the Counterparty is required to post collateral pursuant to
                  such ISDA Credit Support Annex, at the time such ISDA Credit
                  Support Annex is entered into, the Counterparty shall request
                  its legal counsel to deliver to each applicable Rating Agency
                  an opinion as to the enforceability thereof; or

                  (3) enter into such other credit support arrangements to
                  assure performance by the Counterparty of its obligations
                  under this Transaction.

         Notwithstanding the foregoing, in the event that the Joint Probability
         is reduced below A- in the case of S&P, or A3, in the case of Moody's,
         then the Offsetting Counterparty shall promptly notify the Trust (and
         any permitted assignee or transferee of the Trust) and the Counterparty
         of such event and (unless, within thirty (30) days after such reduction
         the applicable Rating Agency has reconfirmed the ratings of the
         Reference Notes and the Other Securities that were in effect
         immediately prior to such reduction) the Counterparty shall within
         thirty (30) days of receipt of notice of such reduction, with the prior
         written confirmation of the applicable Rating Agency that such
         arrangement will not result in the reduction of the rating of any of
         the Reference Notes or the Other Securities existing immediately prior
         to the reduction of the applicable Joint Probability as a direct result
         of the reduction of such Joint

                                       3


         Probability, obtain a Substitute Swap Provider acceptable to the Trust
         (such acceptance not to be unreasonably withheld) and replace this
         Transaction with a swap transaction on substantially similar terms or
         with such other amendments as consented to in writing by the Trust
         (which consent shall not be unreasonably withheld) provided such
         replacement would result in an S&P Joint Probability of at least AA- or
         a Moody's Joint Probability of Aa3 except that such Substitute Swap
         Provider shall thenceforth be the "Counterparty" hereunder.

         Upon any replacement of this Transaction with a swap transaction with a
         Substitute Swap Provider, this Transaction shall terminate without any
         payment by either party hereto and any and all collateral posted by the
         Counterparty shall be returned to it within three (3) Business Days and
         any other form of collateral arrangement (including letters of credit,
         surety bond or other guarantee) provided by or on behalf of the
         Counterparty shall terminate.

         In the event that the Counterparty fails to satisfy its obligations set
         forth above in this Section 4, the Trust or any permitted assignee or
         transferee of the Trust shall have the option, exercisable in its
         discretion and with regard to the interests of the Noteholders, within
         ten (10) Business Days following the date of expiry of the thirty (30)
         day period after the date of receipt of notice of the reduction
         (unless, within thirty (30) days of receipt of notice of such
         reduction, the applicable Rating Agency has reconfirmed the rating of
         the Reference Notes that was in effect immediately prior to such
         reduction), to designate (in writing) an Early Termination Date on the
         basis that such failure shall be treated as a Termination Event with
         the Counterparty as the Affected Party. For the avoidance of doubt, the
         Counterparty and the Trust acknowledge and agree that any such failure
         shall not constitute an Event of Default.

5.       Account Details:

                  Payments to Fixed Rate Payer:

                           JPMorgan Chase Bank - New York, NY
                           ABA No.: 02100021
                           A/C: No.: 507199782 further credit to
                                  CARAT 2004-1 Collection Account No. 2600155500
                           Attn: Keith Richardson (312) 267-5030

                  Payments to Floating Rate Payer:

                           BANK OF NEW YORK,
                           SWIFT: IRVTUS3N
                           for favour Credit Suisse First Boston International,
                           London
                           Account Number: 8900360968

6.       Limited Recourse: Notwithstanding anything to the contrary contained
         herein but without limiting the Counterparty's rights under Section
         5(a)(i) of the Primary ISDA Agreement, all of the obligations of the
         Trust shall be payable by the Trust only at the times and to the extent
         of funds available therefor under the Trust Sale and Servicing
         Agreement and, to the extent such funds are not available or are
         insufficient for the payment thereof, shall not constitute a claim
         against the Trust to the extent of such unavailability or insufficiency
         until such time as, and then to the extent that, the Trust has assets
         sufficient to pay such prior deficiency. This paragraph shall survive
         the termination of this Agreement

                                       4


         but in all cases shall expire one year and one day after the final
         payment with respect to all notes and certificates issued by the Trust.

7.       Limitation of Liability: It is expressly understood and agreed by the
         parties hereto that (a) this Agreement is executed and delivered by
         Deutsche Bank Trust Company Delaware, not individually or personally
         but solely as Owner Trustee of the Trust in the exercise of the powers
         and authority conferred and vested in it, (b) each of the
         representations, undertakings and agreements herein made on the part of
         the Trust is made and intended not as personal representations,
         undertakings and agreements by Deutsche Bank Trust Company Delaware but
         is made and intended for the purpose for binding only the Trust, (c)
         nothing herein contained shall be construed as creating any liability
         on Deutsche Bank Trust Company Delaware, individually or personally, to
         perform any covenant either expressed or implied contained herein, all
         such liability, if any, being expressly waived by the parties hereto
         and by any Person claiming by, through or under the parties hereto and
         (d) under no circumstances shall Deutsche Bank Trust Company Delaware
         be personally liable for the payment of any indebtedness or expenses of
         the Trust or be liable for the breach or failure of any obligation,
         representation, warranty or covenant made or undertaken by the Trust
         under this Agreement or any other related documents.

8.       To the extent that a capitalized term in this Transaction is defined by
         reference to a related definition contained in any Trust Document, for
         purposes of this Transaction only, such capitalized term shall be
         deemed to be amended only if the amendment of the term in a Trust
         Document relating to such capitalized term occurs with the prior
         written consent of the Counterparty.

                                     * * * *

                                       5


         Please confirm that the foregoing correctly sets forth the terms of our
agreement by executing the copy of this Confirmation enclosed for that purpose
and returning it to us.

                                  CAPITAL AUTO RECEIVABLES ASSET
                                  TRUST 2004-1

                                  By: DEUTSCHE BANK TRUST COMPANY
                                      DELAWARE, not in its individual capacity
                                      but solely as Owner Trustee

                                  By:     /s/ Michele H.Y. Voon
                                      ----------------------------------------
                                  Name: Michele H.Y. Voon
                                  Title: Attorney-In-Fact

Accepted and confirmed as of the date first written above:

CREDIT SUISSE FIRST BOSTON INTERNATIONAL

By:   /s/ Linda Steinmuller
    ---------------------------------------
Name:    Linda Steinmuller
Title:      Vice President

Acknowledged and agreed as of the date first written above:

GENERAL MOTORS ACCEPTANCE CORPORATION,
solely as Calculation Agent

By:    /s/ Karen A. Sabatowski
    ---------------------------------------
Name: Karen A. Sabatowski
Title: Director - Securitization and Cash Management



                                    EXHIBIT A

The following terms shall have the following meanings in this Confirmation:

         "Determination Date": the tenth (10th) day of each calendar month, or
if such tenth (10th) day is not a Business Day, the next succeeding Business
Day.

         "Distribution Date": the fifteenth (15th) day of each succeeding
calendar month following the Effective Date or, if such fifteenth (15th) day is
not a Business Day, the next such succeeding Business Day, commencing April 15,
2004.

         "Indenture": the Indenture, dated as of the date hereof between the
Trust and the Indenture Trustee, as amended and supplemented from time to time
in accordance with its terms.

         "Indenture Trustee": JPMorgan Chase Bank, not in its individual
capacity but solely as trustee under the Indenture, or any successor trustee
under the Indenture.

         "LIBOR": means for any Calculation Period with respect to each Floating
Rate Payer Payment Date, the rate for deposits in U.S. Dollars for a period of
one month which appears on the Telerate Service Page 3750 as of 11:00 a.m.,
London time, on the day that is two LIBOR Business Days prior to the first day
of the Calculation Period preceding such Floating Rate Payer Payment Date (or,
in the case of the initial Floating Rate Payer Payment Date, two LIBOR Business
Days prior to Closing Date) preceding such Floating Rate Payer Payment Date. If
the rate does not appear on that date on the Telerate Service Page 3750 (or any
other page as may replace that page on that service, or if that service is no
longer offered, any other service commonly used in the interbank market for
displaying LIBOR or comparable rates as may be selected by the Indenture Trustee
after consultation with the Seller), then LIBOR will be the Reference Bank Rate.

         "LIBOR Business Day": any day other than a Saturday, Sunday or any
other day on which banks in London are required or authorized to be closed.

         "Other Securities": Class A-2 Notes, Class A-3 Notes, Class A-4 Notes
and Certificates issued by the Trust.

         "Reference Bank Rate": means for any Calculation Period for any
Floating Rate Payer Payment Date, the per annum rate determined on the basis of
the rates at which deposits in U.S. Dollars are offered by the reference banks
(which will be four major banks that are engaged in transactions in the London
interbank market, selected by the Calculation Agent) as of 11:00 a.m., London
time, on the day that is two LIBOR Business Days prior to the first day of the
Calculation Period preceding such Floating Rate Payer Payment Date to prime
banks in the London interbank market for a period of one month, in amounts
approximately equal to the principal amount of the Reference Notes then
outstanding. The Calculation Agent will request the principal London office of
each of the reference banks to provide a quotation of its rate. If at least two
quotations are provided, the rate will be the arithmetic mean of the quotations,
rounded upwards to the nearest one-sixteenth of one percent. If on that date
fewer than two quotations are provided as requested, the rate will be the
arithmetic mean, rounded upwards to the nearest one-sixteenth of one percent, of
the rates quoted by one or more major banks in New York City, selected by the
Calculation Agent, as of 11:00 a.m., New York City time, on that date to leading
European banks for United States dollar deposits for a period of one month in
amounts approximately equal to the principal amount of the Reference Notes then
outstanding. If no quotation can be obtained, then LIBOR will be the rate for
the prior Floating Rate Payer Payment Date.

         "Reference Note Balance": as of the Effective Date, $553,000,000 and,
with respect to each Distribution Date thereafter, the aggregate principal
balance of any and all outstanding Reference Notes.

                                     A - 1


         "Seller": Capital Auto Receivables, Inc., which has executed the Trust
Sale and Servicing Agreement as the Seller, or its successor in interest
pursuant to Section 3.03 of the Trust Sale and Servicing Agreement.

         "Trust Sale and Servicing Agreement": the Trust Sale and Servicing
Agreement, dated as of the date hereof between the Seller, General Motors
Acceptance Corporation, as Servicer, and the Trust, as amended, modified and
supplemented from time to time in accordance with its terms.

                                     A - 2


                                    EXHIBIT B

         "Contingent Party": the Offsetting Counterparty or the Replacement
Offsetting Counterparty, as applicable.

         "Fallback Swap Transaction": the swap transaction entered into by the
Trust and Offsetting Counterparty relating to the Class A-1 Notes.

         "Joint Probability": the Moody's Joint Probability or the S&P Joint
Probability, as applicable.

         "Moody's": Moody's Investors Service, Inc. and its successors.

         "Moody's Joint Probability" means the joint probability determined by
Moody's of the long-term likelihood of payment under this interest rate swap
determined by locating the intersection of the long-term unsecured debt ratings
of the Primary Party and the Contingent Party on the table below headed "Implied
Joint Support Rating for Medium Correlation Case" (except that, for any pairing
other than the initial Primary Party with the initial Contingent Party, the
table below to be used shall be the table headed "Implied Joint Support Rating
for Low Correlation Case" or the table headed "Implied Joint Support Rating for
High Correlation Case" if so specified by Moody's within five days after Moody's
has received notice of a potential pairing of a Primary Party with a Contingent
Party).

             IMPLIED JOINT SUPPORT RATING FOR HIGH CORRELATION CASE



         Rating of the Higher Rated Party
         --------------------------------------------------------------------------------------------------------
               Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2   Ba3   B1    B2    B3   Caa
                                                        
         --------------------------------------------------------------------------------------------------------
Rating   Aaa   Aaa
 of      --------------------------------------------------------------------------------------------------------
 the     Aa1   Aaa   Aaa
Lower    --------------------------------------------------------------------------------------------------------
Rated    Aa2   Aaa   Aaa   Aa1
Party    --------------------------------------------------------------------------------------------------------
         Aa3   Aaa   Aaa   Aa1   Aa2
         --------------------------------------------------------------------------------------------------------
         A1    Aaa   Aaa   Aa1   Aa2   Aa3
         --------------------------------------------------------------------------------------------------------
         A2    Aaa   Aaa   Aa1   Aa2   Aa3   A1
         --------------------------------------------------------------------------------------------------------
         A3    Aaa   Aaa   Aa1   Aa2   Aa3   A1    A2
         --------------------------------------------------------------------------------------------------------
         Baa1  Aaa   Aaa   Aa1   Aa2   Aa3   A1    A2   A3
         --------------------------------------------------------------------------------------------------------
         Baa2  Aaa   Aaa   Aa1   Aa2   Aa3   A1    A2   A3     Baa1
         --------------------------------------------------------------------------------------------------------
         Baa3  Aaa   Aaa   Aa1   Aa2   Aa3   A1    A2   A3     Baa1  Baa2
         --------------------------------------------------------------------------------------------------------
         Ba1   Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1
         --------------------------------------------------------------------------------------------------------
         Ba2   Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2
         --------------------------------------------------------------------------------------------------------
         Ba3   Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2   Ba3
         --------------------------------------------------------------------------------------------------------
         B1    Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2   Ba3   B1
         --------------------------------------------------------------------------------------------------------
         B2    Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2   Ba3   B1    B2
         --------------------------------------------------------------------------------------------------------
         B3    Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2   Ba3   B1    B2    B3
         --------------------------------------------------------------------------------------------------------
         Caa   Aaa   Aa1   Aa2   Aa3   A1    A2    A3   Baa1   Baa2  Baa3  Ba1   Ba2   Ba3   B1    B2    B3   Caa
         --------------------------------------------------------------------------------------------------------


                                      B - 1


            IMPLIED JOINT SUPPORT RATING FOR MEDIUM CORRELATION CASE



Rating of the Higher Rated Party
         --------------------------------------------------------------------------------------------------------
                Aaa  Aa1  Aa2   Aa3   A1   A2   A3    Baa1    Baa2  Baa3   Ba1   Ba2   Ba3    B1   B2    B3   Caa
         --------------------------------------------------------------------------------------------------------
                                                        
Rating   Aaa    Aaa
 of      --------------------------------------------------------------------------------------------------------
 the     Aa1    Aaa  Aaa
Lower    --------------------------------------------------------------------------------------------------------
Rated    Aa2    Aaa  Aaa  Aa1
Partyg   --------------------------------------------------------------------------------------------------------
         Aa3    Aaa  Aaa  Aa1   Aa1
         --------------------------------------------------------------------------------------------------------
         A1     Aaa  Aaa  Aa1   Aa1  Aa1
         --------------------------------------------------------------------------------------------------------
         A2     Aaa  Aaa  Aa1   Aa1  Aa2   Aa2
         --------------------------------------------------------------------------------------------------------
         A3     Aaa  Aaa  Aa1   Aa1  Aa2   Aa2  Aa3
         --------------------------------------------------------------------------------------------------------
         Baa1   Aaa  Aaa  Aa1   Aa1  Aa2   Aa3  A1     A2
         --------------------------------------------------------------------------------------------------------
         Baa2   Aaa  Aaa  Aa1   Aa1  Aa2   Aa3  A1     A2     A3
         --------------------------------------------------------------------------------------------------------
         Baa3   Aaa  Aaa  Aa1   Aa1  Aa2   Aa3  A1     A2     A3    Baa2
         --------------------------------------------------------------------------------------------------------
         Ba1    Aaa  Aa1  Aa1   Aa2  Aa3   A1   A2     A3     Baa1  Baa2   Baa3
         --------------------------------------------------------------------------------------------------------
         Ba2    Aaa  Aa1  Aa1   Aa2  Aa3   A1   A2     A3     Baa1  Baa2   Ba1   Ba1
         --------------------------------------------------------------------------------------------------------
         Ba3    Aaa  Aa1  Aa1   Aa2  Aa3   A1   A2     A3     Baa1  Baa3   Ba1   Ba1   Ba2
         --------------------------------------------------------------------------------------------------------


              IMPLIED JOINT SUPPORT RATING FOR LOW CORRELATION CASE



Rating of the Higher Rated Party
        -------------------------------------------------------------------------------------------------------
                Aaa  Aa1  Aa2   Aa3  A1    A2   A3    Baa1 Baa2    Baa3   Ba1   Ba2    Ba3   B1   B2   B3   Caa
        -------------------------------------------------------------------------------------------------------
                                                      
Rating  Aaa    Aaa
of      -------------------------------------------------------------------------------------------------------
the     Aa1    Aaa   Aaa
Lower   -------------------------------------------------------------------------------------------------------
Rated   Aa2    Aaa   Aaa  Aaa
Party   -------------------------------------------------------------------------------------------------------
        Aa3    Aaa   Aaa  Aaa   Aaa
        -------------------------------------------------------------------------------------------------------
        A1     Aaa   Aaa  Aaa   Aaa  Aaa
        -------------------------------------------------------------------------------------------------------
        A2     Aaa   Aaa  Aaa   Aaa  Aaa   Aa1
        -------------------------------------------------------------------------------------------------------
        A3     Aaa   Aaa  Aaa   Aaa  Aaa   Aa1  Aa2
        -------------------------------------------------------------------------------------------------------
        Baa1   Aaa   Aaa  Aaa   Aaa  Aaa   Aa1  Aa3   Aa3
        -------------------------------------------------------------------------------------------------------
        Baa2   Aaa   Aaa  Aaa   Aaa  Aaa   Aa1  Aa3   A1    A1
        -------------------------------------------------------------------------------------------------------
        Baa3   Aaa   Aaa  Aaa   Aaa  Aa1   Aa1  Aa3   A1    A1     Baa1
        -------------------------------------------------------------------------------------------------------
        Ba1    Aaa   Aaa  Aaa   Aa1  Aa1   Aa2  A1    A1    A2     Baa1   Baa3
        -------------------------------------------------------------------------------------------------------
        Ba2    Aaa   Aaa  Aa1   Aa1  Aa1   Aa2  A1    A1    A2     Baa2   Baa3  Ba1
        -------------------------------------------------------------------------------------------------------
        Ba3    Aaa   Aaa  Aa1   Aa1  Aa2   Aa3  A1    A2    A3     Baa2   Baa3  Ba1    Ba2
        -------------------------------------------------------------------------------------------------------
        B1     Aaa   Aa1  Aa1   Aa2  Aa3   Aa3  A1    A3    Baa1   Baa2   Ba1   Ba1    Ba2  Ba3
        -------------------------------------------------------------------------------------------------------
        B2     Aaa   Aa1  Aa2   Aa2  Aa3   A1   A2    A3    Baa1   Baa3   Ba1   Ba1    Ba3  Ba3   B1
        -------------------------------------------------------------------------------------------------------
        B3     Aaa   Aa1  Aa2   Aa3  A1    A1   A3    Baa1  Baa2   Baa3   Ba1   Ba2    Ba3  B1    B1   B3
        -------------------------------------------------------------------------------------------------------
        Caa    Aaa   Aa1  Aa2   Aa3  A1    A2   A3    Baa1  Baa2   Baa3   Ba1   Ba2    Ba3  B1    B2   B3   Caa
        -------------------------------------------------------------------------------------------------------


Notwithstanding the foregoing, in the event that under the Triparty Agreement
the Offsetting Counterparty has acceded to the rights of the Counterparty and no
swap transaction has been effected with an additional contingent counterparty or
replacement swap counterparty under the circumstances contemplated by Section

                                      B - 2


2.02 of the Triparty Agreement, then the term "Moody's Joint Probability" shall
refer to the Offsetting Counterparty's long term senior unsecured credit rating
assigned by Moody's (and, for avoidance of doubt, the obligations of the
Counterparty specified in Section 4 of this Confirmation shall constitute
obligations of the Offsetting Counterparty).

         "Offsetting Counterparty" means General Motors Acceptance Corporation
or any successor thereto ("GMAC") under the Fallback Swap Transactions entered
into between the Trust and GMAC.

         "Primary Party": the Counterparty, unless a Substitute Swap Provider
has been obtained, in which case it shall be the Substitute Swap Provider or, if
applicable, a guarantor thereof.

         "Rating Agency": each of S&P and Moody's.

         "S&P":   Standard & Poor's Ratings Services and its successors.

         "S&P Joint Probability" means the joint probability determined by S&P
of the long-term likelihood of payment under the interest rate swap determined
by locating the intersection of the Counterparty's long term senior unsecured
debt rating and the Contingent Party's long-term senior unsecured debt rating in
the following table:

                          IMPLIED JOINT SUPPORT RATING



         PRIMARY PARTY
- -------------------------------------------------------------------------------------------------------------------
              AAA      AA+        AA       AA-       A+        A         A-      BBB+      BBB       BBB-
              -----------------------------------------------------------------------------------------------------
                                                                              
CONTINGENT    AAA       AAA      AAA       AAA       AAA      AAA       AAA       AAA       AAA      AAA       AAA
  PARTY       -----------------------------------------------------------------------------------------------------
              AA+       AAA      AAA       AAA       AAA      AAA       AAA       AAA       AAA      AAA       AAA
              -----------------------------------------------------------------------------------------------------
              AA        AAA      AAA       AAA       AAA      AAA       AAA       AAA       AA+      AA+       AA+
              -----------------------------------------------------------------------------------------------------
              AA-       AAA      AAA       AAA       AA+      AA+       AA+       AA+       AA+      AA+       AA
              -----------------------------------------------------------------------------------------------------
              A+        AAA      AAA       AAA       AA+      AA+       AA+       AA+       AA       AA        AA-
              -----------------------------------------------------------------------------------------------------
              A         AAA      AAA       AAA       AA+      AA+       AA        AA        AA-      AA-       A+
              -----------------------------------------------------------------------------------------------------
              A-        AAA      AAA       AAA       AA+      AA+       AA        AA-       A+       A+        A
              -----------------------------------------------------------------------------------------------------
              BBB+      AAA      AAA       AA+       AA+      AA        AA-       A+        A        A         A-
              -----------------------------------------------------------------------------------------------------
              BBB       AAA      AAA       AA+       AA+      AA        AA-       A+        A        A-        BBB+
              -----------------------------------------------------------------------------------------------------
              BBB-      AAA      AAA       AA+       AA       AA-       A+        A         A-       BBB+      BBB
              -----------------------------------------------------------------------------------------------------


Notwithstanding the foregoing, (i) in the event that the long-term senior
unsecured debt rating of either the Primary Party or the Contingent Party is
rated below BBB- by S&P, then the S&P Joint Probability shall be the higher of
the then current long-term senior unsecured debt rating of the Primary Party and
the Contingent Party and (ii) in the event that under the Triparty Agreement the
Offsetting Counterparty has acceded to the rights of the Counterparty and no
swap transaction has been effected with an additional contingent counterparty or
replacement swap counterparty under the circumstances contemplated by Section
2.02 of the Triparty Agreement, then the term "S&P Joint Probability" shall
refer to the Offsetting Counterparty's long-term senior unsecured credit rating
assigned by S&P (and, for the avoidance of doubt, the obligations of the
Counterparty specified in Section 4 of this Confirmation shall constitute
obligations of the Offsetting Counterparty).

         "Triparty Agreement": the Triparty Contingent Assignment Agreement
dated as of the Effective Date among the Trust, the Offsetting Counterparty and
the Counterparty.

                                      B - 3