I am looking at buying a 99 grand prix GTP with reverse out of the transmission, I have read online that it uses a heavy duty transmission which i believe is a 4T65E-HD what I am wanting to find out is what other years use this transmission and what other models might use it so I could take a trip to a bone yard and find the right one I will need. Any help would be really appreciated.


Asked by Oct 17, 2014 at 09:00 PM about the 1999 Pontiac Grand Prix 4 Dr GTP Supercharged Sedan

Question type: General

4 Answers


1997-2003 Grand Prix GTP supercharged. Will also work out of a Regal GS/Supercharged 1997-2004, Bonneville Supercharged 1997-2005, Monte Carlo SS 2004-2005, Impala SS 2004-2005. And I do believe the Park AVE Ultra and last gen Riviera

1 out of 1 people think this is helpful.

I had been told that only a 98-99 would work but was sure others would also. Thanks TA!


Nope as long as it is a Supercharged car it will work. No problem, Happy hunting!

Wade Frazier

They changed some of the connectors you may need to cut and splice, but it should work 1997- 2003 3.8 supercharged engine power plants...

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