EXHIBIT 99.2


                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of General Motors Acceptance Corporation
(the Company) on Form 10-Q for the period ending June 30, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the Report), I, William
F. Muir, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C.
ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002,
that to the best of my knowledge:

(1)  The Report fully complies with the  requirements of section 13(a) or 15(d)
     of the Securities  Exchange Act of 1934; and
(2)  The information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the Company.




/s/  William F. Muir
- ----------------------------------------


William F. Muir
Executive Vice President and
Chief Financial Officer
August 14, 2002