Thread: Strange shifting & Idle issue

You'll need to bring the car to the dealership and have them update the bcm to Pcm by the sounds of it. Or if you know someone local with a tuner have them out a stock file back on your stock Pcm.

Also check the wires from the tps sensor, they might be frayed or melted somewhere and when they get hot enough they ground out.

[QUOTE=Swiggles;1432384]You'll need to bring the car to the dealership and have them update the bcm to Pcm by the sounds of it. Or if you know someone local with a tuner have them out a stock file back on your stock Pcm.

My stock PCM works but doesn't have the latest GM updates. Their is no problem with the ABS or Traction Control when it's installed.

The TC is inoperable with the ZZP PCM I purchased, which is why they are sending out a replacement.(no charge) Will be here this afternoon.