DirtyOil wrote:
The mechanic said the brake are wearing unevenly and faster than usual
this tells me that you have issues with the calipers. if you have uneven wear as in one side of the rotor is worn more then the other (usually the outer surface, as the pistons are on the "inboard" side of the rotor, the inner pads are stationary where as the outer move in and out as the brake pedal is applied) then the calipers are sticking, either the calipers slides are worn or the pins are corroded and/or gummed up. if the brake pads are worn thinner at the bottom and thicker at the top of both the inner and outer, then bottom piston on the caliper is gummed up or corroded meaning the piston is not returning once brake pedal is released (would be same idea if the tops of each pad is worn more then the bottoms) I would look at replacing the calipers with rebuilds after all truck is over 11 yrs old, time to replace these parts.
Bingo we have a winner sort of....
These era GM disc brakes need regular maintenance. The caliper slide pins need lube regularly -synthetic CRC or Sta-Lube brake pin grease seems to hold up the best for me. The rubber sleeves the caliper pins ride in need replaced if they are torn or ultra dry. The Cliper pin itself needs to be corrosion free too. Brake pads need proper fitting, too. Should be able to push them in/out with your pinky -bet the mechanic had to use a hammer to get them out due to corrosion.
I fit my pads and lube the caliper pins once every year even in the mild Seattle area climate...those in the rust belt need to do this spring and summer for excellent working brakes that last a long time.....
