Recall 87V-121: 1983–1987 Chevrolet B6P042, 1983–1987 GMC B6P042
GENERAL MOTORS CORP. recall for service brakes, air, reported to NHTSA on Aug 3, 1987, covering about 7,870 vehicles.
The problem
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 fix
As necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.
Notes
System: brakesvehicle description: school buses equipped with 7,500 lb. Front axle and mediumduty trucks equipped with a 7,000 lb. Front axle.
Recall details
| Manufacturer | GENERAL MOTORS CORP. |
|---|---|
| Component | Service Brakes, Air › Drum › Chamber |
| Recall started by | the manufacturer |
| NHTSA campaign number | 87V121000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Chevrolet B6P042 | 1983, 1984, 1985, 1986, 1987 | All years |
| GMC B6P042 | 1983, 1984, 1985, 1986, 1987 | All years |
Not every vehicle of these model years is included. Enter your VIN at nhtsa.gov/recalls ↗ or ask a dealer.
Frequently asked questions
What is recall 87V-121?
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.
How is recall 87V-121 fixed?
As necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.
Is the recall repair free?
Yes. Safety recall repairs are free at authorized dealers. Check whether your vehicle is included with its VIN at nhtsa.gov/recalls.