Yesterday it went into the shop again. This after there was a burning plastic smell the wife smelled while driving then the whole suite of gages went dead, and all the warning lights came on. Also the radio was dead too and the On Star light flashed on and off. The engine was revving up and down while going 50 MPH or so and the car was lurching.
So into the shop it went, and a call later reporting "We have found nothing wrong with the car..."
I surely am.