Sierra Classic 2500 4WD V8-6.0L (2007)
1. Remove the brake caliper.
2. Caution: Do not place your fingers in front of the piston in order to catch or protect the piston while applying compressed air. This could result in
serious injury.
Place a thin piece of wood in front of the piston in order to prevent damage. Remove the piston by directing compressed air into the brake hose
inlet fitting port of the brake caliper.
3. Remove the piston boot.
4. Remove the piston seal.
5. Remove the caliper bleed screw cap.
6. Remove the caliper bleed screw.
7. Inspect the caliper bore and the piston seal groove for scoring and corrosion. If you find excessive scoring or corrosion around the piston seal area,
replace the brake caliper.
8. Inspect the caliper bracket guide surfaces for corrosion and wear. Remove and replace the caliper bracket, if necessary.
9. Clean all of the residue from the brake pad guiding surfaces on the caliper and the caliper bracket.
10. Clean all of the parts not included in the repair kit with denatured alcohol.
11. Dry all the parts with filtered unlubricated compressed air.
12. Blow out all passages in the caliper and the caliper bleeder valve.
Assembly Procedure
