Brake light and ABS warning
Driving home yesterday from the coast my ABS light and brake light on my dash both came on, anyone experienced this before? If so what was the problem?
Forum Discussion
drcook wrote:
Sometimes with Duramaxes (or any GM product using the same parts) you can get some corrosion under the sensor where it attaches to the hub. It will lift it up a bit. This can cause the system to trigger a warning.
Or the sensor itself went bad. We had a sensor go bad and it allowed the brakes to pulsate when coming to a stop and jump forward a couple feet after stopping. This was on our 2004.5 not too long after we bought it.
I am having an intermittent ghost like that myself. When I pull the summer tires and put the winter/storage tires and wheels back on, I am going to check the wheel sensors.
Now I realize you live in the land of no rust, but that would be the first place I would check as all it involves is some time on your part.
These trucks can also get false messages from the ground under the driver if it gets enough dirt/corrosion to interfere with the ground.
Just as an aside (and not suggesting this is the issue), how long has it been since your brakes have been bled? With the GM ABS units, if you ever work on the brakes and get air into the ABS unit, it will have to be bled out at the dealership. It takes a Tech2 unit to open and close the 6 valves in the ABS to get all the air out of it.
X2
