Exhibit 99.5-1

                                                 As of January 9, 2001


Merrill Lynch Capital Services, Inc.
250 Vesey Street
4 World Financial Center
New York, New York 10080

                                    Re: Class A-4 Notes

Dear Ladies and Gentlemen:

The purpose of this letter  agreement is to confirm the terms and  conditions of
the Swap Transaction (the "A-4 Primary Swap") entered into between Merrill Lynch
Capital Services,  Inc. (the  "Counterparty") and Capital Auto Receivables Asset
Trust   2001-1  (the   "Trust")   as  of  the  Trade  Date  listed   below  (the
"Transaction").  This letter  constitutes a "Confirmation" as referred to in the
Trust ISDA Agreement specified below.

1.   The  definitions and provisions  contained in the 1991 ISDA  Definitions as
     supplemented  by the 1998  Supplement  to the 1991  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 January 9, 2001.  The  agreement  is  comprised of the
     printed form of such  agreement as published by ISDA, as  supplemented  and
     modified by a Schedule ("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 Trust 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-4  Floating  Rate Asset Backed  Notes (the  "Reference  Notes")
     issued by the Trust for value pursuant to and subject to the Indenture.

     Capitalized  terms used herein 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 Transaction

     Notional Amount:  $471,000,000.00  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: January 9, 2001

     Effective Date: January 17, 2001

     Termination  Date:  The  earlier of the close of  business on (i) March 15,
     2005,  (ii) the Fixed Rate Payer  Payment  Date after  January  15, 2003 on
     which the  Notional  Amount is  reduced to zero and (iii) the date on which
     the Servicer  effects its option to repurchase the receivables  pursuant to
     Section 8.01 of the Trust Sale and Servicing Agreement.

     Fixed Amounts:

          Fixed Rate Payer: The Trust

          Fixed Rate  Payer  Period End  Dates:  The 15th  calendar  day of each
          month,  commencing  February 15, 2001 to and including  March 15, 2005
          with, in each case, No Adjustment.

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

          Fixed Rate: 5.325%

          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:  One  Business Day prior to each
          Distribution Date

          Reset Dates: Each Distribution Date

          Floating Rate: LIBOR (as defined in Exhibit A)

          Spread: +7 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


                                       -2-





     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.

     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 30 days after  such  reduction,  the  applicable  Rating  Agency has
     reconfirmed  the rating of the Reference Notes or the Other Notes which was
     in effect  immediately  prior to such  reduction)  the  Counterparty  shall
     within  thirty  (30) days of the date of the  reduction  of the  applicable
     Joint  Probability,  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  Notes  existing
     immediately prior to the reduction of the applicable Joint Probability,  as
     a direct  result of 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



                                       -3-




     permitted  assignee or  transferee of the Trust) of such event and (unless,
     within 30 days  after  such  reduction  the  applicable  Rating  Agency has
     reconfirmed  the rating of the Reference Notes or the Other Notes which was
     in effect  immediately  prior to such  reduction)  the  Counterparty  shall
     within  thirty  (30)  days of the date 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 Notes 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 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 the 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 2001-1 Collection Account No. 205074-000
             Attn: K. Richardson

          Payments to Floating Rate Payer:

              Bankers Trust, New York, New York
              ABA No.: 021 001 033
              A/C No.: 00-811-874 Ref.: USD Swap Account
              FAO: Merrill Lynch Capital Services, Inc. Dollar Swaps - New York, New York


6.   Limited Recourse: Notwithstanding anything to the contrary contained herein
     but without limiting the Counterparty's  rights under Section 5(a)(i),  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



                                       -4-





     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 Bankers
     Trust  (Delaware),  not  individually  or  personally  but  solely as Owner
     Trustee of Capital Auto  Receivables  Asset Trust 2001-1 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 Bankers Trust (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  Bankers   Trust   (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 Bankers Trust
     (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.

9.   Acknowledgment  and  Ratification:  The Trust  acknowledges and agrees that
     this Confirmation is the legal,  valid and binding obligation of the Trust,
     enforceable in accordance with its terms, not  withstanding  that the Trade
     Date  precedes  the date upon  which the  Trust was  formed,  and the Trust
     hereby  ratifies and confirms all actions taken on its behalf in respect of
     this Confirmation prior to the date hereof.


                                       -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 2001-1

                                  By: BANKERS TRUST (DELAWARE),
                                      not in its individual capacity
                                      but solely as Owner Trustee



                                  By:     CHARLES C. GREITER
                                  _________________________________
                                  Name:   Charles C. Greiter
                                  Title:  Attorney-in-Fact



Accepted and confirmed as
of the date first above written:

Merrill Lynch Capital Services, Inc.


By:____________________________
Name:__________________________
Title:_________________________


Acknowledged and agreed as of
the date first above written:

General Motors Acceptance Corporation, solely as Calculation Agent


By:__________________________
Name:
Title:


                                       -6-



                                    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  February 15,
2001.

     "Indenture":  the Indenture, dated as of January 17, 2001 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,  a national banking
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 Notes":  The Class A  Asset-Backed  Notes and Variable Pay Revolving
Notes issued by the Trust (other than the Reference Notes).

     "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
Indenture  Trustee after  consultation with the Seller) 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 Indenture
Trustee 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  Indenture  Trustee  after
consultation with the Seller, 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 any and all
classes of 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,  $471,000,000.00  and,
with respect to each  Distribution  Date  thereafter,  the  aggregate  principal
balance of any and all outstanding Reference Notes.


                                       -7-





     "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 January 17, 2001  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.




                                       -8-




                                    EXHIBIT B

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

"Guarantor": Merrill Lynch & Co. or its successors.

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

"Moody's": Moody's Investors Service 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
Aaa     Aaa
Aa1     Aaa     Aaa
Aa2     Aaa     Aaa     Aa1
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



                                       -9-







                             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
Aaa     Aaa
Aa1     Aaa     Aaa
Aa2     Aaa     Aaa     Aa1
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
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


                               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
Aaa     Aaa
Aa1     Aaa     Aaa
Aa2     Aaa     Aaa     Aaa
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




                                      -10-



     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 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 transaction  entered
     into between the Trust and GMAC.

     "Primary Party": the Guarantor,  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:





                                    PRIMARY PARTY

                         
C                AAA       AA+       AA        AA-        A+        A          A-         BBB+         BBB         BBB-
O
N       AAA      AAA       AAA       AAA       AAA        AAA       AAA        AAA        AAA          AAA         AAA

T       AA+      AAA       AAA       AAA       AAA        AAA       AAA        AAA        AAA          AAA         AAA

I       AA       AAA       AAA       AAA       AAA        AAA       AAA        AAA        AA+          AA+         AA+

N       AA-      AAA       AAA       AAA       AA+        AA+       AA+        AA+        AA+          AA+         AA

G       A+       AAA       AAA       AAA       AA+        AA+       AA+        AA+        AA           AA          AA-

E       A        AAA       AAA       AAA       AA+        AA+       AA         AA         AA-          AA-         A+

N       A-       AAA       AAA       AAA       AA+        AA+       AA         AA-        A+           A+          A

T       BBB+     AAA       AAA       AA+       AA+        AA        AA-        A+         A            A           A-

        BBB      AAA       AAA       AA+       AA+        AA        AA-        A+         A            A-          BBB+

P       BBB-     AAA       AAA       AA+       AA         AA-       A+         A          A-           BBB+        BBB
A
R
T
Y



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

                                      -11-




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.


                                      -12-