GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C Sierra - 2WD 🢒 General Information 🢒 General Information 🢒 Rear Brake Caliper Replacement

Removal Procedure
  1. Remove 2/3 of the brake fluid from the master cylinder.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .

    4. Object Number: 370154 Size: SH
  4. Using a C-clamp or the equivalent, compress the caliper piston until the caliper piston bottoms in the bore.

    5. Object Number: 363420 Size: SH
  5. Disconnect the brake hose at the caliper by removing the inlet fitting bolt.

    6. Object Number: 406126 Size: SH
  6. Remove the caliper mounting bolts (15 series).

    7. Object Number: 371261 Size: SH
  7. Remove the caliper mounting bolts (25 series).
  8. Remove the caliper.
  9. Inspect the caliper assembly. Refer to Brake Caliper Inspection .

Installation Procedure
  1. Install the caliper.

    2. Object Number: 406126 Size: SH
  2. Install the caliper mounting bolts (15 series).
  3. Perform the following procedure before installing the caliper guide pin bolts (15 Series only).
    4. 3.1.  Remove all traces of the original adhesive patch.
    3.2. Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.
    3.3. Apply Threadlocker GM P/N 12345493 or Red LOCTITE™ #272 to the threads of the bolt.

    Object Number: 371261 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the caliper mounting bolts (25 series).

    5. Tighten

        • Tighten the caliper guide pin bolts to 42 N·m (31 lb ft) (15 series).
        • Tighten the caliper guide pin bolts to 108 N·m (80 lb ft) (25 series).

    Object Number: 363420 Size: SH
  5. Connect the brake hose at the caliper by installing the inlet fitting bolt.

    6. Tighten

        • Tighten the bolt to 48 N·m (33 lb ft) (15 series).
        • Tighten the bolt to 52 N·m (38 lb ft) (25 series).
  6. Bleed the brakes. Refer to Antilock Brake System Automated Bleed Procedure .
  7. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  8. Remove the safety stands.
  9. Lower the vehicle.
  10. Refill the brake master cylinder to the proper level with fresh brake fluid.