Transmission compatibility

Asked by Aug 30, 2010 at 04:30 AM about the 2001 Pontiac Grand Prix

Question type: Maintenance & Repair

I have a 2001 Grand Prix that needs a transmission, what years are compatible?

1 Answer

645

Your transaxle is a 4T65E and they come on many FWD GM vehicles. Some will have different final drive gear ratios, and I am weary of GM's PCM being year-sensitive to components relating to transmissions. I do know for a fact, however, that in 2003 the electrical and some mechanical pieces were changed in the 4T65E, so if the transmission is a 2003+ then it is not compatible. I would think that, since 3.8 Grand Prix's went from 4T60E to 4t65E in 1998, that 98-02 4T65E transmissions will work for your car. But I would check on a W-body specific car forum such as clubGP

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