GMC B6P042 1984: SERVICE BRAKES, AIR:DRUM:CHAMBER
NHTSA Campaign ID Number: 87V121000
| Make | Model | Year |
|---|---|---|
| GMC | B6P042 | 1984 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1987-08-06 | 1987-08-03 | 1987-08-07 |
Production Dates: 1982-10-01 - 1987-06-01
Manufacturers Involved: General Motors, LLC
Component: SERVICE BRAKES, AIR:DRUM:CHAMBER
Potential Number Of Units Affected: 7870
Report Initiator: MFR MFR Report
SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION.
BRACKETS CAN BREAK, RESULTING IN LOSS OF BRAKING ABILITYAT THAT FRONT WHEEL, AND POSSIBLY RESTRICTED STEERING, WHICH COULD LEAD TO AVEHICLE CRASH WITHOUT PRIOR WARNING.
AS NECESSARY, INSTALL NEW REINFORCED FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE ON VEHICLES WITHOUT ONE.
SYSTEM: BRAKESVEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH 7,500 LB. FRONT AXLE AND MEDIUMDUTY TRUCKS EQUIPPED WITH A 7,000 LB. FRONT AXLE.
