Brakes - Disc Brake Warranty Service and Procedures: Overview
WARRANTY ADMINISTRATIONBulletin No.: 05-05-22-002D
Date: June 17, 2008
Subject:
Disc Brake Warranty Service and Procedures - LRO, Lateral Runout, Rotor, Corrosion, Pulsation, Pads, Wear, Noise, Refinish, Clean-up, Squeak, Grind, Groan
Models:
1999-2009 Saturn Vehicles (U.S. Only)
Supercede:
This bulletin is being revised to include the 2009 model year. Please discard Corporate Bulletin Number 05-05-22-002C (Section 05 - Brakes).
Important:
^ Saturn retailers in Canada should refer to Corporate Bulletin Number 00-05-22-002*.
^ For all warranty brake service, the procedures in this bulletin must be followed.
^ PLEASE FAMILIARIZE YOURSELF WITH THESE UPDATES BEFORE PERFORMING YOUR NEXT GM BRAKE SERVICE.
For your convenience, this bulletin updates and centralizes all GM's Standard Brake Service Procedures and Policy Guidelines for brake rotor and brake pad service and wear. For additional information, the Service Technical College lists a complete index of available Brake courses. This information can be accessed at www.gmtraining.com > resources > training materials > brakes courseware index.
Important:
PLEASE FAMILIARIZE YOURSELF WITH THESE UPDATES BEFORE PERFORMING YOUR NEXT GM BRAKE SERVICE.
The following five (5) key steps are a summary of this bulletin and are REQUIRED in completing a successful brake service.
1. Measure and Document Pre-Service Rotor Thickness* (REQUIRED on Repair Order) - determine rotor clean-up/refinish/replace.
2. Properly clean ALL brake corner mating surfaces - hub, rotor and wheel- hub, rotor and wheels. Properly clean-up/refinish rotor, measure and document post-service rotor thickness (REQUIRED on Repair Order).
Important:
If you are consistently measuring high LRO after rotor refinishing, verify lathe equipment is properly calibrated.
4. After brake pad replacement and/or rotor clean-up/refinish/replace, measure and document Lateral Run Out [LRO] - (REQUIRED on the Repair Order. If post-service Lateral Run Out (LRO) measures above specification, maximum 0.050 mm (0.002 in) **, Correct for LRO using Brake Align(R) Plate (part number REQUIRED on Repair Order). For more information and the Brake Align(R) application chart shown above, refer to TSB 01-05-23-001*.
5. Properly reassemble the brake corner using proper torque tools, torque specification and torque sequence - wheel lug nuts.
* The bulletin refers to Minimum Thickness specification as the minimum allowable thickness after refinish. Always refer to SI to verify the spec stamped on the rotor is the minimum thickness spec after refinish and not the discard spec.
**The bulletin will refer to LRO maximum specification as 0.050 mm (0.002 in). However, some trucks may slightly differ. Refer to SI to verify specifications.
Bulletin Format
Tool Information
Warranty Information
Worksheet - Brake Lathe Calibration
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