EXHIBIT 99.6


     TRIPARTY CONTINGENT  ASSIGNMENT AGREEMENT dated as of January 24, 2002 (the
"Agreement"),  among Capital Auto Receivables  Asset Trust 2002-1 (the "Trust"),
General Motors Acceptance  Corporation  ("GMAC") and Bank of America,  N.A. (the
"Primary Swap Counterparty").

     WHEREAS,  the Trust and the Primary Swap Counterparty have entered into the
Primary Swap Agreement (hereinafter defined);

     WHEREAS,  GMAC and the Primary  Swap  Counterparty  have  entered  into the
Back-to-Back Swap Agreement (hereinafter defined);

     NOW, THEREFORE, the parties hereto hereby agree as follows:

                                    ARTICLE I

                                   Definitions

     SECTION 1.01 The following terms shall have the meanings set forth below:

     "Additional  Contingent  Counterparty"  means a Person  with the  Requisite
Rating  entering  into an  agreement  substantially  similar  to this  Agreement
pursuant to Section 2.02.

     "Assignment  Date" means the date upon which GMAC receives  notice from the
Trust of the occurrence of a Designated Event, or if such date is not a Business
Day, the next succeeding Business Day.

     "Back-to-Back  Swap  Agreement"  means the ISDA  Interest Rate and Currency
Exchange Agreement (including the Schedule thereto),  dated as of March 8, 1994,
between  the Primary  Swap  Counterparty  and GMAC,  and the  Back-to-Back  Swap
Confirmation.

     "Back-to-Back  Confirmations"  means (i) the  Confirmation  of Back-to-Back
Swap  Transaction  relating to the Class A-2 Notes and (ii) the  Confirmation of
Back-to-Back Swap Transaction  relating to the Class A-3 Notes, each of which is
between GMAC and the Primary Swap  Counterparty and which have been entered into
pursuant to the ISDA Interest Rate and Currency  Exchange  Agreement  (including
the Schedule  thereto),  dated as of March 8, 1994, between GMAC and the Primary
Swap Counterparty.

     "Back-to-Back Swap Transaction" means the transaction  described in each of
the Back-to- Back Confirmations.

     "Delinquent  Payments"  means any payments owed to the Trust as a result of
liabilities, obligations and duties of the Primary Swap Counterparty pursuant to
the Primary Swap Agreement  accruing prior to the Assignment  Date that have not
been made by the Primary Swap Counterparty.



     A  "Designated  Event"  shall  occur (a) if one or more  Events of  Default
occurs under the Primary Swap  Agreement with the Primary Swap  Counterparty  as
the Defaulting Party and the Trust notifies the Primary Swap  Counterparty  that
it is declaring a Designated Event to have occurred,  (b) upon the occurrence of
any applicable  Termination  Event under the Primary Swap Agreement in which the
Primary Swap Counterparty is an Affected Party, if no transfer is effected under
Part 1(f)(iv) of the Schedule to the Primary Swap Agreement (or in the case of a
credit  downgrade  which  results in GMAC having a higher credit rating than the
Primary Swap Counterparty,  no appropriate  arrangements pursuant to the Primary
Confirmation's  credit  downgrade  provisions  are made within  thirty (30) days
unless,  within thirty (30) days after such  reduction,  the  applicable  Rating
Agency  has  reconfirmed  the rating of the  Reference  Notes that was in effect
immediately  prior  to  such  reduction)  with  respect  to  such  event  and an
assignment  pursuant to Section 2.01 would result in the  non-occurrence of such
event as it  pertains  to the  Primary  Swap  Counterparty  or (c) if the  Trust
receives a notice from the Primary Swap Counterparty  pursuant to the provisions
of Section 2.03 herein.

     "Fallback Swap Agreement"  means the ISDA Master  Agreement  (including the
Schedule),  dated as of the date  hereof,  between  GMAC and the Trust,  and the
Fallback Confirmations.

     "Fallback  Confirmations"  means  (i) the  Confirmation  of  Fallback  Swap
Transaction  relating  to the  Class A- 2 Notes  and (ii)  the  Confirmation  of
Fallback  Swap  Transaction  relating to the Class A-3, each of which is between
GMAC and the Trust and which have been entered into  pursuant to the ISDA Master
Agreement (including the Schedule thereto), dated as of the date hereof, between
GMAC and the Trust.

     "Fallback Swap Transaction" means the transaction  described in each of the
Fallback Confirmations.

     "GMAC" means General Motors Acceptance Corporation.

     "Joint Probability" has the meaning given in each Primary Confirmation.

     "Moody's" means Moody's Investors Service.

     "Operative  Swap  Agreement"  means (i) prior to the  Assignment  Date, the
Primary Swap Agreement and (ii) on and after the  Assignment  Date, the Fallback
Swap Agreement.

     "Operative Swap  Transactions"  means (i) prior to the Assignment Date, the
Primary  Swap  Transactions  and (ii) on and  after  the  Assignment  Date,  the
Fallback Swap Transactions.

     "Primary Swap  Agreement"  means the ISDA Master  Agreement  (including the
Schedule  thereto),  dated as of the  date  hereof,  between  the  Primary  Swap
Counterparty and the Trust, and the Primary Confirmations.

     "Primary   Confirmations"  means  (i)  the  Confirmation  of  Primary  Swap
Transaction relating to the Class A-2 Notes and (ii) the Confirmation of Primary
Swap Transaction relating to the Class

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A-3 Notes,  each of which is between the Primary Swap Counterparty and the Trust
and  which  have  been  entered  into  pursuant  to the  ISDA  Master  Agreement
(including  the  Schedule  thereto),  dated as of the date  hereof  between  the
Primary Swap Counterparty and the Trust.

     "Primary Swap Transaction"  means the transaction  described in each of the
Primary Confirmations.

     "Requisite  Rating" means a long-term,  unsecured and  unsubordinated  debt
rating from S&P or Moody's which,  when considered  together with the long-term,
unsecured  and  unsubordinated  debt  rating  of GMAC,  would  result in a Joint
Probability of at least AA- in the case of S&P, or Aa3 in the case of Moody's.

     "Servicer"  means GMAC or its  successor as servicer  pursuant to the Trust
Sale and Servicing Agreement.

     "S&P"  means  Standard  and Poor's  Ratings  Services,  a  Division  of the
McGraw-Hill Companies and any successor.

     SECTION 1.02 Definitions.  Capitalized terms used in this Agreement and not
otherwise defined herein shall have the meanings specified for such terms (i) in
the Primary Swap Agreement or the  Back-to-Back  Swap Agreement,  as dictated by
its context or (ii) if not defined therein,  in Appendix A to the Trust Sale and
Servicing  Agreement,  dated as of the date hereof between the Trust, the Seller
and the  Servicer  (the  "Trust  Sale and  Servicing  Agreement").  The rules of
construction  specified  in Part  II of such  Appendix  A  shall  apply  to this
Agreement.

                                   ARTICLE II

                        Assignment Upon Designated Event

     SECTION 2.01  Assignment.  In the event that a Designated  Event shall have
occurred and is then  continuing  and the Trust has notified  GMAC in writing of
such   occurrence  and  continuance   and  has  provided   evidence   reasonably
satisfactory  to  GMAC  that  a  Designated  Event  has  occurred  and  is  then
continuing,  each of the following shall  automatically  occur on the Assignment
Date:

          (a) GMAC shall accede to rights and obligations equivalent to those of
     the Primary Swap  Counterparty  under each of the Primary Swap Transactions
     in  accordance  with the terms of the Fallback  Swap  Agreement  (including
     rights,  title  and  interests  and  liabilities,  obligations  and  duties
     accruing prior to the Assignment  Date).  In connection with the foregoing,
     in the event that there are  Delinquent  Payments  under any  Primary  Swap
     Transaction,  GMAC shall  promptly (and in any event no later than the next
     Business Day) make the full amount of such Delinquent Payments to the Trust
     (but  only to the  extent  that GMAC has not made a  corresponding  payment
     under the Fallback Swap  Agreement).  If , on or after the Assignment Date,
     GMAC  has  made  payments  to  the  Primary  Swap  Counterparty  under  the
     Back-to-Back Swap Agreement, the Primary Swap Counterparty

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     agrees to reimburse  GMAC in an amount equal to the full amount of any such
     payments up to the amount of the Delinquent Payments. In the event that the
     Primary  Swap  Counterparty  has made  payments to the Trust as a result of
     liabilities,  obligations  and  duties  of the  Primary  Swap  Counterparty
     accruing prior to the Assignment Date in  circumstances  where GMAC has not
     made all or any part of such  payments  to the  Primary  Swap  Counterparty
     under the Back-to-Back Swap Agreement, GMAC agrees to reimburse the Primary
     Swap  Counterparty  in an  amount  equal  to the  full  amount  of any such
     payments.  Except  as  expressly  provided  in the third  sentence  of this
     paragraph  (a), on and at all times  following  the  Assignment  Date,  the
     Primary  Swap  Counterparty  shall  have no  liabilities,  obligations  and
     duties,  including payment  obligations of any kind, under the Primary Swap
     Agreement.  As of the Assignment Date, the Primary Swap Transactions  shall
     be governed by the terms of the Fallback  Swap  Agreement,  and the Primary
     Swap Agreement shall no longer govern the Primary Swap Transactions (except
     with respect to rights,  liabilities,  obligations and duties accrued prior
     to the Assignment Date).

          (b) The Back-to-Back Swap  Transactions  shall be terminated on and as
     of the Assignment  Date without  further  liability or obligation of either
     party thereto, without prejudice to those rights, liabilities,  obligations
     and duties accruing prior to the Assignment Date.

          (c) Upon (i) the effectiveness of the Fallback Swap Agreement and (ii)
     the  payment  by GMAC to the Trust in a timely  fashion  of all  Delinquent
     Payments,  if any, (x) the Event of Default or Termination  Event under the
     Primary Swap Agreement constituting such Designated Event, if any, shall be
     deemed  to be  cured  on and as of the  Assignment  Date,  and (y) no Early
     Termination  Date  (as  defined  in  the  Primary  Swap  Agreement)  may be
     designated as a result of such Designated Event.

     There  shall be no  breakage  fees or other  termination  costs or expenses
payable by the Trust to the Primary  Swap  Counterparty  or by the Primary  Swap
Counterparty  to GMAC in  connection  with an  assignment  of the  Primary  Swap
Agreement to GMAC in accordance  with this Section 2.01 and the termination of a
Back-to-Back Swap Transaction as a result of the occurrence and continuance of a
Designated Event.

     SECTION 2.02 Additional Contingent Counterparty. If GMAC has acceded to the
rights and obligations of the Primary Swap  Counterparty  under the Primary Swap
Agreement in accordance  with the provisions of this Article II, GMAC shall have
the option to find a Person with the Requisite Rating that will either (i) enter
into an assignment  agreement  that is  substantially  similar to this Agreement
pursuant to which such Person will become the Additional Contingent Counterparty
or (ii) enter into a swap transaction  substantially similar to the Primary Swap
Transactions and a contingent assignment agreement that is substantially similar
to this  Agreement  under  which  such  Person  would  accede to the  rights and
obligations  of GMAC under the Primary Swap  Agreement  and GMAC will become the
Additional  Contingent   Counterparty.   The  Primary  Swap  Counterparty  shall
reimburse  GMAC for any costs  associated  with  finding a party to serve as the
Additional Contingent Counterparty. Any delay or inability in finding a party to
serve  as  the  Additional  Contingent  Counterparty  will  not  result  in  the
occurrence of a Termination Event, an

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Event of Default or otherwise lead to the  designation  of an Early  Termination
Date under the Operative Swap Agreement.

     SECTION 2.03  Notice.  The Primary Swap  Counterparty  agrees that,  to the
extent that it has actual  knowledge that it will be unable to make a payment or
delivery on a scheduled payment date under the Primary Swap Agreement,  it shall
provide  notice to the Trust of such  inability at least two Business Days prior
to such  scheduled  payment  date.  This  Section 2.03 shall not be construed to
obligate the Primary Swap  Counterparty to undertake any  affirmative  action or
inquiry  to  ascertain  whether  it will be able to make  any  such  payment  or
delivery.  Any failure by the Primary Swap Counterparty to provide notice to the
Trust  of  such  inability  shall  be  without  prejudice  to the  Primary  Swap
Counterparty's rights under this Agreement and the Primary Swap Agreement.

                                   ARTICLE III

                                  Miscellaneous

     SECTION 3.01  Miscellaneous.  (a) Entire  Agreement.  This  Agreement,  the
Primary Swap Agreement and the Back-to-Back Swap Agreement constitute the entire
agreement and  understanding  of the parties with respect to the subject  matter
thereof and  supersede all oral  communications  and prior  writings  (except as
otherwise provided therein) with respect thereto.

     (b)  Counterparts.   This  Agreement  may  be  executed  and  delivered  in
counterparts  (including by facsimile transmission) each of which will be deemed
an original.

     (c) Headings.  The headings used in this  agreement are for  convenience of
reference  only and are not to affect  the  construction  of or to be taken into
consideration in interpreting this Agreement.

     (d)  GOVERNING  LAW.  THIS  AGREEMENT  WILL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK (WITHOUT  REFERENCE TO CHOICE
OF LAW DOCTRINE).

     (e)  Notices.  All  demands,  specifications  and notices to a party hereto
under this Agreement will be made pursuant to the provisions of the Primary Swap
Agreement or the Back-to- Back Swap Agreement, as applicable.

     (f) No Waiver. Notwithstanding any other provision in this Agreement to the
contrary, no full or partial failure to exercise and no delay in exercising,  on
the part of any party hereto, any right,  remedy,  power or privilege under this
Agreement,  regardless  of the  frequency or constancy of such failure or delay,
shall operate in any way as a waiver thereof by such party.

     (g) Inconsistencies.  Except as expressly provided herein, the Primary Swap
Agreement shall not be deemed to be amended hereby in any respect.  In the event
of any inconsistencies between the provisions of this Agreement and those of the
Primary Swap  Agreement  or the Back-to-  Back Swap  Agreement,  the  provisions
hereof shall prevail.

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     (h)  Amendments.  This Agreement may not be amended except by the execution
of a written instrument by all parties hereto.

     (i) 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 in its individual capacity but solely as Owner Trustee of
Capital  Auto  Receivables  Asset Trust 2002-1 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) in its individual,  corporate  capacity,  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.

                                     * * * *

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     IN WITNESS WHEREOF,  the parties have executed this agreement by their duly
authorized officers as of the date hereof.

                                  CAPITAL AUTO RECEIVABLES ASSET TRUST
                                  2002-1

                                  By Bankers Trust (Delaware) not in its
                                  individual capacity, but solely as trustee

                                  By -------------------------------------------
                                     Name:
                                     Title:


                                  GENERAL MOTORS ACCEPTANCE
                                  CORPORATION

                                  By -------------------------------------------
                                     Name:
                                     Title:


                                  BANK OF AMERICA, N.A.

                                  By -------------------------------------------
                                     Name:
                                     Title:



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