Brakes (Rear) - Groan/Chirp Noise During Apply
File In Section: 05 - BrakesBulletin No.: 99-05-23-002A
Date: December, 1999
TECHNICAL
Subject:
Rear Brake Groan/Chirp Noise During Brake Apply (Replace Rear Brake Pads)
Models:
1998-2000 Chevrolet Camaro
1998-2000 Pontiac Firebird Built prior to VIN Breakpoint Y2111896
This bulletin is being revised to update model year information and provide a VIN Breakpoint. Please discard Corporate Bulletin Number 99-05-23-O02 (Section 5 - Brakes).
Condition
Some customers may comment on a groan/chirp type noise coming from the rear of the vehicle during or near the end of applying the brakes. This condition may be more prevalent during a brake apply when in reverse than when making a forward stop and typically is noted during the first 1500 miles (2400 km) of vehicle operation.
Cause
The rear disc brake lining material may cause a resonance in the rear axle assembly that produces a groan/chirp noise condition.
Correction
Replace the existing rear disc brake pads with P/N 18038575, following the service procedure in the Disc Brakes sub-section of the Service Manual.
Parts Information
Part Number Description
18038575 Rear Disc Brake Pad Kit
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Labor
Operation Description Time
H0043 Pads, Disc Brake (Rear) - 0.8 hr
R&R or Replace