Park Brake Shoe Clearance Adjustment
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Without disconnecting the hydraulic brake hoses, remove the brake calipers and brackets as an assembly and support with heavy mechanics wire or equivalent. Refer to Rear Brake Caliper Bracket Replacement (1500 Series) , Rear Brake Caliper Bracket Replacement (2500 Series) .
- Remove the rear brake rotors. Refer to Rear Brake Rotor Replacement (1500 Series) , Rear Brake Rotor Replacement (2500 Series) .
- Set the J-21177-A Drum-to-Brake Shoe Clearance Gauge so that it lightly contacts the parking brake shoe friction surface of the brake rotor (1) at its widest point.
- Position the J-21177-A Drum-to-Brake Shoe Clearance Gauge over the park brake shoes (1) at the widest point.
- Rotate the park brake shoe adjuster until the park brake shoes just contact the J-21177-A Drum-to-Brake Shoe Clearance Gauge.
- Using a feeler gauge, set the parking brake shoe clearance to 0.66 mm (0.026 in).
- Repeat steps 3-6 for the opposite side.
- Install the rear brake rotors and secure with hand tightened wheel nuts installed with the cone facing outward.
- With all tension relieved from the park brake cables, rotate the rear brake rotors. Observe the amount of effort required for rotation, and the amount of drag, if present.
- If drag is present, repeat steps 3-6