I`m not real sure on this car but all GM`s there is a special tool to screw the piston back into the bore .......sometimes the ratchet mech will freeze up and calibers will need to be replaced ...........if you can`t get tool ..try using a big set of pliers that will go around the caliper piston and first try to move it back and forth and then counter clockwise back into the piston ............good luck most of the time this will work
bg, February 2006
