Fantastic 88, you will have to know whats going on with the PCM data to get an idea of where the problem may be... Sounds almost like the PCM is getting a confused TPS signal...
The PCM in your car is in totall control of the 4T65-E... If the trans is acting funky, as in not missing gears but shifting at the complete wrong time, Luging the engine, like the car has shiftitidis than hook a scantool up to it and see what kind of info you get from the TPS and VSS as well.... There may be some confusion for the PCM somewhere.. Good Luck
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