Exhibit 99.6

                                November 13, 2002

Citibank, N.A.
250 West Street
10th Floor
New York, New York 10013

    RE: Form of Confirmation of Primary Swap Relating to the Class A-2a 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
Citibank, N.A. (the "Counterparty") and Capital Auto Receivables Asset Trust
2002-5 (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 November
          13, 2002. 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-2a 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: $1,035,000,000.00 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 the Trust to the
          Counterparty on or prior to the Determination Date relating to such
          Calculation Period pursuant to Section 3 below).

          Trade Date: November 5, 2002.

          Effective Date: November 13, 2002.



          Termination Date: The earlier of the close of business on (i) January
          18, 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 December 16, 2002 to and including
                    January 18, 2005 with, in each case, subject to adjustment
                    in accordance with the Following Business Day Convention.

                    Fixed Rate Payer Payment Date: One Business Day prior to
                    each Distribution Date.

                    Fixed Rate: 1.67%.

                    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: Each Distribution Date.

                    Floating Rate: 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
          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, 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 on terms approved by S&P
                    and Moody's 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"); or

                    (2) enter into an ISDA Credit Support Annex with the Trust
                    mutually acceptable to the Trust and the Counterparty; 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 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

                                        3



          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:

                         Bank One, National Association
                         ABA No.:  071000013
                         A/C: No.: 10-43256 further credit to CARAT 2002-5
                                   Collection Account 2600094000
                         Attn: Keith Richardson

                    Payments to Floating Rate Payer:

                         Citibank, N.A.
                         ABA No.: 021-000-089
                         Account Name: Financial Futures
                         Reference: CARAT 2002-5
                         A/C No.: 00167679

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 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

                                        4



          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 2002-5

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

                                      By:
                                         ---------------------------------
                                      Name:    Man Wing Li
                                      Title:   Attorney-In-Fact

Accepted and confirmed as
of the date first written above:

CITIBANK, N.A.

By:
     ---------------------------------

Name:
     ---------------------------------

Title:
     ---------------------------------


Acknowledged and agreed as
of the date first written above:

GENERAL MOTORS ACCEPTANCE
CORPORATION, solely as Calculation Agent

By:
   ----------------------------------

Name:
     --------------------------------

Title:
     --------------------------------


Primary Confirmation of A-2a Interest Rate Swap




                                    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 on the
first day following the Effective Date.

          "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": Bank One, National Association, not in its
individual capacity but solely as trustee under the Indenture, or any successor
trustee under the Indenture.

          "LIBOR": 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 Distribution 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 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-1, Class A-2b, Class A-3a, Class A-3b,
Class A-4 Notes and Certificates issued by the Trust.

          "Reference Bank Rate": 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 Distribution Date 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, $1,035,000,000.00
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-2a 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
   Party     ----------------------------------------------------------------------------------------------------------
              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 Offsetting Counterparty'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