Disassembly Procedure
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Front Brake Caliper - Remove - Front Brake Caliper Replacement (JH6) , or Front Brake Caliper Replacement (JH9)
- Place a wood block between the brake caliper pistons and the brake caliper housing bridge.
Carefully remove the brake caliper piston by directing low pressure compressed air into the brake caliper inlet hole.(1)[2x]
Brake Caliper Piston Boot(1) - Remove[2x]
- Front Brake Caliper Piston Seal(2) - Remove[2x]
Front Brake Caliper Bleeder Valve Cover (1) - Remove
- Front Brake Caliper Bleeder Valve(2) - Remove
- Inspect the brake caliper bore and the piston seal groove for scoring and corrosion. If you find scoring or corrosion around the piston seal area, replace the brake caliper housing.
- Clean the brake caliper piston bore and seal counterbore, and the caliper piston with denatured alcohol, or equivalent.
- Dry all of the parts with filtered compressed air.
- Blow out all passages in the brake caliper housing and the brake caliper bleeder valve.
WARNING:
Do not place fingers in front of the caliper piston(s) in an attempt to catch or protect it when applying compressed air. The piston(s) can fly out with force and could result in serious bodily injury.