The defect
THE DUAL AIR RESERVOIRS OF SOME TRUCKS WERE EQUIPPED WITH CARBON STEEL SPRINGS INSTEAD OF STAINLESS STEEL SPRINGS, AS INTENDED. THE CARBON STEEL SPRING IS MORE SUSCEPTIBLE TO RUSTING THAN THE STAINLESS STEEL SPRING. THIS RUSTING COULD CAUSE THE CHECK VALVE TO FAIL, CAUSING TOTAL LOSS OF FRONT AND REAR BRAKES.
The remedy
THE AIR TANK WILL BE INSPECTED AND, IF NECESSARY, THE AIR VALVE WILL BE REPLACED WITH ONE CONTAINING A STAINLESS STEEL SPRING.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Chevrolet C6 | 1983 |
| Chevrolet C7 | 1983 |
| Chevrolet P6 | 1983 |
| GMC C6 | 1983 |
| GMC C7 | 1983 |
Components: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
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 C6 | 1983 | 0 | 2 |
| Chevrolet C7 | 1983 | 0 | 2 |
| Chevrolet P6 | 1983 | 0 | 1 |
| GMC C6 | 1983 | 0 | 2 |
| GMC C7 | 1983 | 0 | 2 |
Other service brakes, air recalls in 1984
10 of the 164 recall campaigns reported to NHTSA in 1984 concerned the service brakes, air; GENERAL MOTORS CORP. filed 1,195 campaigns in all.
| 84V126000 11 Oct 1984 | PACCAR, INCORPORATED |
| 84V114000 25 Sept 1984 | FREIGHTLINER CORP. |
| 84V117000 24 Sept 1984 | CHRYSLER CORPORATION |
| 84V081000 9 Jul 1984 | FREIGHTLINER CORP. |
| 84V076000 19 Jun 1984 | PACCAR, INCORPORATED |
| 84V061000 18 May 1984 | GENERAL MOTORS CORP. |
| 84V035000 23 Mar 1984 | MACK TRUCKS, INCORPORATED |
| 84V032000 22 Mar 1984 | MACK TRUCKS, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1984