Park Brake Pedal Adjustment - Pickup 1500 Light Duty Without 4-Wheel Steering
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, and 2003 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before you adjust the park brake, verify that the park brake shoes are adjusted to provide a clearance of 0.026" (0.6604 mm).
Verify that the self adjuster lock-out pin has be removed. Fully apply and release the park brake pedal 3 times.