So over the past week while driving my 2010 1500 Sierra SLT, when applying the brakes, my dash lights for the ABS, TC AND SC come on. Then the truck tells me to service all 3. It's happened 3 times. I've checked all the fuses, wiring connections and wires. Nothing found to be bad. Anyone know besides what Youtube has told me to check what is going on? The brake pads still have plenty of meat and the front wheel bearings were changed last spring. I don't hear or notice either one telling me it's going out. I've searched the forum to no avail.

 

Check fluid level.

 

Fluid level was about 1/4" below max line. I topped it off. When I fired up the truck to leave work an hour ago the lights came on before I moved the truck. Stopped for gas and nothing.

 

Check for fluid in master, might have leak in diaphragm.

 

Had my cuzin scan the truck and the front pass wheel bearing speed sensor is what's causing the lights. So time to replace the wheel bearings.

 

So I changed the pass wheel bearing and the light still pops on. I did the battery disconnect trick and that didn't work. Do I have to have it cleared with a computer again?

 

It could also be a bad stop light switch or a bad steering position sensor... or another wheel speed sensor... or wheel speed sensor wiring... or ground wire issue ... or vacuum booster pump / sensor

 

I did find a while back while dealing with the issue that the wires running from the driver side to pass side that connect to the sensor had a bad wire in the loom. Peeled some tape back and found the issue. So I changed the wheel bearing for nothing. Thought I would let ya'll know.

 

Good to hear!

 

Thanks for posting results, might help someone else out in the future.