Park Brake Adjustment

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required:

J 21177-A Drum-to-Brake Shoe Clearance Gage

Fig 1: Measuring Inside Of Rotor

Courtesy of GENERAL MOTORS CORP.

Adjust the J 21177-A until it contacts the inside diameter of the rotor (1).

Fig 2: Adjusting Parking Brake Shoes Using Special Tool

Courtesy of GENERAL MOTORS CORP.

Position the J 21177-A over the park shoe lining, left side shown, at the widest point (1).
Turn the adjuster nut until the lining just contacts the J 21177-A .
Repeat steps 1 through 3 to adjust the right rear park brake.
The clearance between the rear park brake shoe lining and the rotor should be 0.25 mm (0.010 in) or 0.50 mm (.020 in) total.