alg

One of the problems is that there is never a code to check. I get the 'service traction' message and the horrid shifting, but never a CEL.
Shut off the car for 2 minutes or more and when its restarted, no message.

Our HHR is completely stock, and I only do real burnouts with 300+ H.P. American V8 metal.

It may be time to start checking connectors and wiring harness.

On Friday I received a call from someone at Chevrolet Customer Service about the 'traction control problem'. I will be contacting them in a few hours and let everyone know what they had to say.

Thanks to everyone for the feedback.

Lee3333

The codes I have gotten were for MAP and MAF sensors, which have both been cleaned and changed.

Alg-what year is your HHR? I have never heard of a stock car throwing these codes. They have all been after the air cleaner modifications. Please keep me/us informed as to how you make out. I cant believe it is anything loose, since I never had the problem until I did my changes which didnt go anywhere near either fuse box.

alg

We have a 2007. Its the LT2 with everything other than TPS and OnStar.

We cannot afford to keep throwing money at the crummy dealers here in Central Texas and have given up with the car.