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. CONSEQUENCE OF DEFECT: BRACKETS CAN BREAK, RESULTING IN LOSS OF BRAKING ABILITY AT THE FRONT WHEEL, AND POSSIBLY RESTRICT STEERING, WHICH COULD LEAD TO A VEHICLE CRASH WITHOUT PRIOR WARNING.
The remedy
AS NECESSARY, REPLACE FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Chevrolet B6P042 | 1983, 1984, 1985, 1986 |
| GMC B6P042 | 1983, 1984, 1985, 1986 |
Components: SERVICE BRAKES, HYDRAULIC:FLUID
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 |
| GMC B6P042 | 1983 | 0 | 3 |
| GMC B6P042 | 1984 | 0 | 3 |
| GMC B6P042 | 1985 | 0 | 2 |
| GMC B6P042 | 1986 | 0 | 3 |
Other service brakes, hydraulic recalls in 1986
16 of the 173 recall campaigns reported to NHTSA in 1986 concerned the service brakes, hydraulic; GENERAL MOTORS CORP. filed 1,195 campaigns in all.
| 86V174000 30 Dec 1986 | FORD MOTOR COMPANY |
| 86V001000 3 Dec 1986 | ELDORADO MOTOR CORP. |
| 86V125000 10 Sept 1986 | HOLIDAY RAMBLER CORP. |
| 86V120000 26 Aug 1986 | GENERAL MOTORS CORP. |
| 86V109000 8 Aug 1986 | FORD MOTOR COMPANY |
| 86V116000 7 Aug 1986 | OSHKOSH TRUCK CORPORATION |
| 86V102000 29 Jul 1986 | FRUEHAUF CORPORATION |
| 86V088000 11 Jul 1986 | FORD MOTOR COMPANY |
NHTSA recalls (public domain) · all recalls of 1986