Transmission Compatibility

[E_RICE]

Does Anyone Know If A 4T65E-HD From Any GM SuperCharged Vehicle Will Fit In A 1999 Grand Prix GTP

[killerspeed101]

97-02 will work, the 01-02 will have different transmission line fittings tho

 

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[Imp558]

There were differences with the solenoids in the later ones too. I found this: http://www.gmtuners.com/transmission/ That will give you the ability to decipher the tag on the back of a 4t65. Don't de-grease the tag with anything that eats paint, the stuff you need is painted on, lol.