I have a 2004 Chevy Avalanche (103k miles) and just recently my ABS and Brake Light appear and then I get a "Service Brake System" message on the instrument cluster which appear every time I start my truck.
I have found TSB Number:040525002 and followed instructions but this still didn't fix the problem.
The darn dealer wants to charge me $95.00 just to diagnose the problem---DAMN Thiefs!
Any suggestions? Has anyone had similar problems?