OK. The dealer service manager called this afternoon, said the parts had been replaced, and the fluid flushed and replaced, and it was good as new. Neighbor drives me to the shop. I talk with the service manager, pay my bill...$900+...just happy to have the Bolt back. I head off to the Sheetz, to finish the charging experiment I was planning, when the Bolt took a dump on Wednesday. I am hyper aware of the steering, and everything is as smooth a glass going the 21 miles down Rt 15 at 55 mph. I charge from 11.4% DIC to 51% DIC, taking lots of screen shots. I help out a guy who just got a plug-in Chrysler Pacifica van, and thinks he can charge it there. I set him up with PlugShare , and explain the different plug types, and he heads off. I hop on the interstate and head home at 73 mph. About a mile before I get off at our exit, I feel the steering wheel shake. I don't feel it the rest of the way home, on the secondary roads. I pull in the garage, and get out to touch the discs. First one I touch is the driver's side front. It is scalding hot! The new setup, on the front passenger's side is cold. The rear right is warm, and the rear left is cold. I go in and get my VOM with the thermistor. The driver's side disc is 220 F. The right front is 70 F, rear right is 81 F, rear left is 69 F. WTF!?
I didn't suspect the brakes the first time, because they are like new, and the fluid was so clear you needed a flashlight to see it. That's why I suspected a wheel bearing. But they were sure it was a bad caliper. Clearly, there is something else causing the brakes to screw up. I am imagining the traction control has somehow lost its mind, but wouldn't that throw a code? I've never owned a car with brakes run by a computer before.
I figure I will call them first thing Monday and fill them in. I have no interest in replacing parts one at a time until they stumble on the problem. I am going to tell them to call GM tech support. Does that sound reasonable to anybody else?