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2011 Silverado 1500 LT - ABS/Brake/Traction Control lights will not turn off

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15K views 4 replies 4 participants last post by  Kevin Davis  
#1 ·
I'm new to the forum so I'm hoping someone on here has some answers to my problems. My ABS/Brake/Traction control lights are all on, and have been for a while now. I've done some research into this issue and have found a few fixes.

I have already replaced all the wheel speed sensors, checked all fuses, and replaced the ABS control module. None of this has helped. I had the codes pulled from the dealer.......C0569 and U0102. For the U0102 code, it says lost communication with transfer case control module. I don't have 4WD and did not see a module. This confuses me a little.

So if anyone has had or heard of this issue, please let me know anything else that I need to try to fix this irritating problem. Thanks
 
#4 ·
The codes listed above are "mismatched parts" which are listed such as C0569 and U102.

But when I see 4 wheel drive codes on a 2 wheel vehicle, … then I know there was component tampering mismatch. 4 wheel codes "NEVER" pop up on a 2 wheel vehicle. The electronic module(s) software is "VIN specific".

If you disconnected / swapped electronic modules with the battery still connected ignition off, good chances you destroyed some "other" electronic computer systems communication lines. If you modified the vehicle wiring in any way that could of created more problems.

Majority of the time (70%) I find guys putting on macho way oversize wheels and tires then all hell breaks loose with the ABS / Traction control coming on. As for the need to replace all 4 wheel speed sensors, not a possible cause at all.

Reinstall "ALL" the old "correct" electronic computer parts / ABS controller module back into your vehicle for starters. Your "original" ABS module has very specific communication protocols tied into the PCM along with the instrument cluster. If you bought an "aftermarket" ABS module, then you added to your problems because ABS modules are very vehicle / VIN specific. Did the seller request your VIN???

You did some very expensive guesstimating surgery without knowing how to diagnose properly. Now we have to go backwards before we can go forward properly. Once everything is reinstalled, run vehicle for more than 3 miles above 30 mph then record all codes in order to do a proper diagnosis.