anyone ever have there throttle positioning sensor go out on your ls1? i think mine is acting up. once in a great while the trans will act up and slip in between shifts. i just had my trans rebuilt not too long ago, and it only slips when the car has been running for MORE than an hour. btw its not throwing anycodes.

 

A TPS can be wrong but not out of range and cause many problems and never set a code ,