Brakes - Low Effort Parking Brake System Information
Bulletin No.: 01-05-26-001ADate: April 08, 2005
INFORMATION
Subject:
Low Effort Parking Brake Apply System
Models:
2002-2005 Cadillac Escalade, Escalade EXT
2003-2005 Cadillac Escalade ESV
1999-2005 Chevrolet and GMC Full Size Pickup Models
2000-2005 Chevrolet and GMC Full Size Utility Models
2003-2005 HUMMER H2
with Rear Disc Brakes
Supercede:
This bulletin is being revised to add models and model years. Please discard Corporate Bulletin Number 01-05-26-001 (Section 05 - Brakes).
The vehicles indicated above have a "low effort" parking brake apply system. The design intent is that a low force on the park brake pedal will effectively apply the park brake. This was done so all operators can easily apply the park brake sufficiently to maintain the vehicle in a stationary position on an incline.
Owners should not interpret this low pedal effort as an indication of system effectiveness.
This park brake system is self-adjusting and there are no cable adjustment provisions on these vehicles. When a vehicle park brake system has been serviced and/or the brake rotor has been removed or replaced, ensure proper system setting is achieved by performing the following steps:
1. Verify that the park brake shoes are adjusted to provide a clearance of 0.66 mm (0.026 in) between the shoes and brake rotor as indicated in the applicable Service Manual procedure.
2. Fully apply and release the park brake lever three times.
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