GM Service Manual Online
For 1990-2009 cars only

Object Number: 1824349  Size: MF

Callout

Component Name

Warning: Refer to Brake Dust Warning in the Preface section.

Caution: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation.

1

Guide Pin Bolt (Qty: 2)

Caution: Refer to Fastener Caution in the Preface section.

Procedure

  1. Install an open end wrench to hold the caliper guide pin in line with the brake caliper while removing or installing the caliper guide pin bolt. DO NOT allow the open end wrench to come in contact with the brake caliper.
  2. If reusing the guide pin bolt, the threads of the guide pin bolt and the threads of the guide pin must be free of threadlocker residue and debris prior to the application of threadlocker to ensure proper adhesion and fastener retention.
  3. If reusing the guide pin bolt, prepare the guide pin bolt and the guide pin as follows:

    2.1. Thoroughly clean the threadlocker residue from the guide pin bolt threads with denatured alcohol or equivalent and allow to dry.
    2.2. Thoroughly clean the threadlocker residue from the guide pin threads with denatured alcohol or equivalent and allow to dry.
    2.3. Apply high temperature, high strength threadlocker to 2/3 of the threaded length of the guide pin bolt. Ensure there are no gaps along the length of the filled area of the guide pin bolt.
    2.4. Allow the threadlocker to cure approximately 10 minutes before installing the guide pin bolt.

Tighten
27 N·m (20 lb ft)

2

Rear Brake Caliper

Procedure

  1. Do not disconnect the brake caliper hose.
  2. Support the brake caliper with heavy mechanics wire or equivalent.

3

Upper Guide Pin

Procedure

  1. The guide pins are not interchangeable. Note the location of the guide pins.
  2. Apply a small amount of high-temperature silicone grease to the guide pin.

4

Lower Guide Pin

Procedure

  1. The guide pins are not interchangeable. Note the location of the guide pins.
  2. Apply a small amount of high-temperature silicone grease to the guide pin.

5

Guide Pin Seal (Qty: 2)

Tip
Ensure the lip of the seal is fully seated in the groove of the guide pin.