They are completely different yet almost the same.


Confusing right.................sorta.


NON gxp transmissions have a different trans case. GXP's use a special case because of the flywheel/starter setup. The internals are also different between 97-02 and 03+ cars, they got upgraded parts. Also the GXP's have a TCM (transmissin control module) that is unique to the GXP because it has a 5.3 V8 motor with a completely different power control module (PCM).