03 2500hd rear brakes

[03gmc]

The left rear caliper seems to stick on, but it does not do it from the start. I can be driving down the road and not touch the brake and feel the brake come on, sometimes it will go back off on its own, or not. I have replaced calipers before but usually they stick on and thats it never come off, this one is strange anyone run into this before?

Thanks

[j cAT]

Originally Posted by 03gmc

The left rear caliper seems to stick on, but it does not do it from the start. I can be driving down the road and not touch the brake and feel the brake come on, sometimes it will go back off on its own, or not. I have replaced calipers before but usually they stick on and thats it never come off, this one is strange anyone run into this before?

Thanks

see if the pads are binding very common....need to file the pad backing plate,,, ..if the caliper slides easy with the piston pushed back,,,,remove the caliper and with the brake line disconnected see if the pistons retract and push out with the same force....I use a small manual air pump to work the pistons out,,,then you should be able to push the pistons back in with you fingers,,if this is impossible the caliper is bad,,,,I have seen them work great with worn pads///then when the pistons are pushed bach to take on the thicker new pads the piston sticks..


over time with mositure the piston seal hardens,,,the bore gets pitted,,then the binding ..