When my truck was about fours years old, the ABS light came on due to an erratic signal from one of the front wheel sensors. Googling revealed this to be a wide spread problem with Sierra/ Silverados and is caused by rust building up at the sensor mount. I took off the sensors, cleaned everything up and remounted sensors. My regimen now is to apply Krown to this mounting area twice a year, during snow tire changeover.
This spring, when I took the snow tires off, I noticed that three of the brake pads were at 50% life left, but the passenger inner pad was at 30%. Hmm, must be a sticking caliper. So I bought a wrecker caliper and a caliper rebuild kit from RockAuto. It was when I went to install it on my truck I realised that the issue was actually rust buildup on the caliper bracket guideways. These are where the pad ears butt up against, with stainless steel anti rattle clips in betweeen. Wire brushing removed all the rust and the pads are free to move now. Another step has been added on to my regimen now and that is to carefully apply some Krown to the guideways twice a year.
The rear drums have been flawless so far.
BTW I am still on my original pads, at 124k km/ 78k mi, in spite of driving in a very busy city.
This spring, when I took the snow tires off, I noticed that three of the brake pads were at 50% life left, but the passenger inner pad was at 30%. Hmm, must be a sticking caliper. So I bought a wrecker caliper and a caliper rebuild kit from RockAuto. It was when I went to install it on my truck I realised that the issue was actually rust buildup on the caliper bracket guideways. These are where the pad ears butt up against, with stainless steel anti rattle clips in betweeen. Wire brushing removed all the rust and the pads are free to move now. Another step has been added on to my regimen now and that is to carefully apply some Krown to the guideways twice a year.
The rear drums have been flawless so far.
BTW I am still on my original pads, at 124k km/ 78k mi, in spite of driving in a very busy city.