After mechanical troubleshooting I let it fault out again and called OnStar. They took the her to the dealership that changed out the ignition a few weeks ago.
Looks like it was the positive and accessory cables that were at fault according to the tech at the dealership. We shall see tomorrow...
Howdy folks,
My wife was headed to work and received all 4 of these failures at once. Then her break pressure died and she coasted to the side in neutral.
I am really at a loss of where to start with this one. I have heard/read it could be the BCM, the PCM, Throttle Body, Battery...
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