I spent about 30 minutes cussing the idiot bean counter that decided a pressurized plastic reservoir for the coolant burp tank was a good idea. Then I ordered a new tank to replace the currently leaky one.
I started cleaning grounds and connections around the battery, trying to track down why I'm getting the 'service stabilitrack', 'service ABS' and code U0074. I'm beginning to think GM may have hired a Chrysler electrical engineer...
Thanks for the links, I've already replace the ground cables, cleaned everything. I'm not getting the radio cutting out, just no communication on "B" side (at least, I'm getting the U0074 code for that). So can anyone point me to the connections for that CAN bus cabling? I'm pretty sure I've got a wonky connection, just gotta find it.