Brakes (Rear) - Clicking Noises

Bulletin: 92-5-12
Date: Nov. '92
Ref.No.: 92-318-5
Corp.Ref.No.: 235006

SUBJECT:
CLICKING NOISE "SHOE SLAP" FROM REAR BRAKES (REPLACE BRAKE DRUMS)

MODELS AFFECTED:
1992 ROADMASTER SEDANS

CONDITION:

Some owners of Roadmaster sedans built prior to VIN NR460328 and with JA2 brakes may comment of a "clicking" type noise coming from the rear brakes during apply.

CAUSE:

Improper machining creates a "thread like" pattern on the drum braking surface which causes the brake shoes to move out in the drum and then "click or slap" back on the backing plate.

CORRECTION:

A new brake drum was released for production on all sedans with JA2 brakes. This drum has a revised surface finish to reduce "shoe slap" on drum brakes. If a vehicle is found with this condition, REPLACE BOTH brake drums with the new P/N 1244646.

Parts are currently available from GMSPO.

WARRANTY INFORMATION:

Labor Operation No.: H0207
Labor Time: 0.5 Hr.