GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC C-Series Medium Duty Truck B7 🢒 General Information 🢒 General Information 🢒 Brake Rotor Replacement

Removal Procedure
  1. Block the wheels.
  2. Apply the parking brake.
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the tire and wheel. Refer to Wheel Removal in Tires and Wheels.
  5. Remove the brake caliper. Refer to Brake Caliper Replacement .

    6. Object Number: 171547 Size: SH
  6. Remove the brake rotor (with the hub, or with the wheel). Refer to Front Wheel Hub, Bearing, and Seal Replacement in Front Suspension or Oil Seal and/or Bearing Replacement in Rear Axle.

  7. Remove the bolts that mount the front brake rotor to the hub, or the wheel.
  8. Remove the brake rotor from the hub, or the wheel.

Installation Procedure

    Notice: Any new rotor must have the protective coating removed from the friction surfaces before being placed in service. Remove the protective coating using denatured alcohol or an equivalent brake cleaner, and wipe the surface clean with clean cloths. Do not use gasoline, kerosene, or other oil base solvents which may leave an oily residue. This residue is damaging to the brake lining and is flammable.


    Object Number: 171547 Size: SH
  1. Install the brake rotor to the hub, or the wheel.

    2. 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.

  2. Install the bolts that mount the brake rotor to the hub, or the wheel.

    3. Tighten

        • Tighten the brake rotor bolts (9/16 in OD-10 bolt pattern) to 152 N·m (112 lb ft).
        • Tighten the brake rotor bolts (5/8 in OD-5 bolt pattern) to 256 N·m (189 lb ft).

    Important: Ensure that the threads are clean and greaseless before applying the threadlock.

  3. Apply 272 Threadlock GM P/N 12345493, or the equivalent, to the threads of each brake rotor bolt.
  4. Install the brake rotor (with the hub, or with the wheel). Refer to Front Wheel Hub, Bearing, and Seal Replacement in Front suspension or Oil Seal and/or Bearing Replacement in Rear Axle.
  5. Install the brake caliper. Refer to Brake Caliper Replacement .
  6. Clean both sides of the brake rotor with Brake Parts Cleaner GM P/N 12345754 or the equivalent.
  7. Clean the grease cap or cover (if used).
  8. Coat the inside with wheel grease. Do not fill the cap.
  9. Install the tire and wheel. Refer to Wheel Installation in Tires and Wheels.
  10. Lower the vehicle. Refer to Lifting and Jacking the Vehicle .

    11. Caution: Do not move the vehicle until a firm brake pedal is obtained. Failure to obtain a firm pedal before moving vehicle may result in personal injury.

    Important: Check the level of the brake fluid in the master cylinder reservoir after pumping the brake pedal.

  11. Pump the brake pedal several times in order to ensure the pedal is firm and the brake pads are adjusted.
  12. Remove the wheel blocks.