GM Brake Controller Fault
This post got tied up with another post on the Tow Vehicle section so I am starting it up here where it is more appropriate. My truck-'09 Silverado 2500 with integrated brake controller. About 2 1/2...
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msjdbman wrote:
I installed a Prodigy last fall after dealing with the IBC issue on and off for two years. The issue was diagnosed as Electronic Brake Control Unit AND ABS system faults. The ABS system was getting imput signals but no output signals were being found. Therefore, the IBC was essentially disabled. IF they could have found the EBCU, the cost was about a grand, and there was no guarantee offered that replacing that unit would fully solve the problem. There were Technical Service Bulletins that essentially read if Step A (the EBCU) does not resolve the issue, go on to step B, C, D etc until fully resolved. I said the heck with that. I disabled and bypassed the IBC with the Prodigy. I do continue to get the "Service Trailer Brakes" message on the DIC, but I just hit the DIC function button and it's gone until the next time I cycle the key. The Prodigy works great and down the road I go.):
Good to know that my "Plan B" is going to work.
I couldn't believe how hard it was to find info on this through google searches.
Tons of pages with people complaining about the problem, but almost nothing on solutions or even giving locations where the different modules were located.
I managed to find this out for '09 Silverado trailer brake problem:
Main components, pressure sensor switch on right side of master cyl, ABS module is located on the frame rail under the drivers door, integrated trailer brake control module is located on driver side frame rail over the axle, integrated trailer brake controller relay is located on driver side frame rail also, connected by a wire to the integrated brake control module. They are about 10" away from each other.
