Rear Drum Brakes - Sticking/Won't Release
File in Section: 05 - BrakesBulletin No.: 00-05-24-001
Date: April, 2000
TECHNICAL
Subject:
Snow Intrusion Into Rear Drum Brake Assemblies
Models:
1985-87 Buick Somerset
1985-89 Buick Skyhawk
1985-98 Buick Skylark
1985-88 Cadillac Cimarron
1985-2000 Chevrolet Cavalier
1985-88 Oldsmobile Firenza
1985-91 Oldsmobile Cutlass Calais
1992-98 Oldsmobile Achieva
1985-94 Pontiac Sunbird
1985-98 Pontiac Grand Am
1995-2000 Pontiac Sunfire
Condition:
Some customers may comment that after operating their vehicle in snow and then parking the vehicle for an extended period, the rear brakes appear to remain applied.
Cause:
On rare occasions, light powdery snow may enter one or both of the vehicle's rear drum brake assemblies. If the vehicle is parked prior to the snow melt (water) being expelled, this may result in the rear brake shoe(s) adhering/freezing to the brake drum(s). Normally, the brake shoe(s) will break free of the drum upon placing the vehicle in gear. However, cases have been noted where vehicle movement has been restricted until the brake assemblies have had an opportunity to thaw.
Correction:
Replace existing rear brake backing plates with new backing plates, P/N 18015841. Refer to the Drum Brakes sub-section in the Service Manual for replacement procedures.
Parts Information
Parts are expected to be available from GMSPO, April 10, 2000.
Warranty Information
For vehicles repaired under warranty, use as shown.