The issue
MEDIUM AND HEAVY DUTY TRUCKS EQUIPPED WITH EATON ANTI-LOCK AIR BRAKE SYSTEM. THE PISTON IN THE ANTI-LOCK RELAY VALVES MAY EXPAND WHEN EXPOSED TO CERTAIN FLUID CONTAMINATES WHICH MAY BE FOUND IN THE AIR BRAKE SYSTEM. EXPANDED PISTONS CAN STICK OR JAM IN THE VALVES AND PREVENT AIR DELIVERY TO THE BVRAKE CHAMBERS CAUSING A LOSS OF BRAKING POWER ON THE AFFECTED AXLE. THIS CONDITION WOULD RESULT IN LONGER STOPPING DISTANCES.
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged
Vehicles covered
| Make and model | Model years |
|---|---|
| Chevrolet C6500 | 1975, 1976, 1977, 1978 |
| Chevrolet D9500 | 1975, 1976, 1977, 1978 |
| Chevrolet F9500 | 1975, 1976, 1977, 1978 |
| Chevrolet H7500 | 1975, 1976, 1977, 1978 |
| Chevrolet H9500 | 1975, 1976, 1977, 1978 |
| Chevrolet J7500 | 1975, 1976, 1977, 1978 |
| Chevrolet J9500 | 1975, 1976, 1977, 1978 |
| Chevrolet M6500 | 1975, 1976, 1977, 1978 |
| Chevrolet M9500 | 1975, 1976, 1977, 1978 |
| Chevrolet N9500 | 1975, 1976, 1977, 1978 |
| Chevrolet T6500 | 1975, 1976, 1977, 1978 |
| Gmc C6500 | 1975, 1976, 1977, 1978 |
| Gmc D9500 | 1975, 1976, 1977, 1978 |
| Gmc F9500 | 1975, 1976, 1977, 1978 |
| Gmc H7500 | 1975, 1976, 1977, 1978 |
| Gmc H9500 | 1975, 1976, 1977, 1978 |
| Gmc J7500 | 1975, 1976, 1977, 1978 |
| Gmc J9500 | 1975, 1976, 1977, 1978 |
| Gmc M6500 | 1975, 1976, 1977, 1978 |
| Gmc M9500 | 1975, 1976, 1977, 1978 |
| Gmc N9500 | 1975, 1976, 1977, 1978 |
| Gmc T6500 | 1975, 1976, 1977, 1978 |