The defect
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.
The risk
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.
The remedy
AS NECESSARY, INSTALL NEW REINFORCED FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE ON VEHICLES WITHOUT ONE.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Chevrolet B6P042 | 1983, 1984, 1985, 1986, 1987 |
| GMC B6P042 | 1983, 1984, 1985, 1986, 1987 |
Components: SERVICE BRAKES, AIR:DRUM:CHAMBER
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Chevrolet B6P042 | 1983 | 0 | 3 |
| Chevrolet B6P042 | 1984 | 0 | 3 |
| Chevrolet B6P042 | 1985 | 0 | 2 |
| Chevrolet B6P042 | 1986 | 0 | 3 |
| Chevrolet B6P042 | 1987 | 0 | 3 |
| GMC B6P042 | 1983 | 0 | 3 |
| GMC B6P042 | 1984 | 0 | 3 |
| GMC B6P042 | 1985 | 0 | 2 |
| GMC B6P042 | 1986 | 0 | 3 |
| GMC B6P042 | 1987 | 0 | 3 |
Other service brakes, air recalls in 1987
12 of the 197 recall campaigns reported to NHTSA in 1987 concerned the service brakes, air; GENERAL MOTORS CORP. filed 1,195 campaigns in all.
| 87V174000 12 Nov 1987 | THOMAS BUILT BUSES, INC. |
| 87V160000 14 Oct 1987 | MAZDA (NORTH AMERICA),INC |
| 87V158000 6 Oct 1987 | VOLKSWAGEN OF AMERICA,INC |
| 87V147000 15 Sept 1987 | FREIGHTLINER CORP. |
| 87V145000 15 Sept 1987 | VOLVO GM HEAVY TRUCK CORP |
| 87V130000 14 Aug 1987 | HOLIDAY RAMBLER CORP. |
| 87V123000 5 Aug 1987 | ESTABLISHMENT INDUSTRIES |
| 87V112000 20 Jul 1987 | GENERAL MOTORS CORP. |
NHTSA recalls (public domain) · all recalls of 1987