Transport CanadaCritical
1983 GMC C7Transport Canada Recall #1984116
The official notice
Defect
On certain vehicles, a carbon steel check valve spring was mistakenly installed in the dual compartment air reservoir. Usage of carbon steel springs in this application can result in severe corrosion and subsequent failure. If a leak develops in the primary air system, air would not be checked or isolated from the failed system and air would flow from the secondary system and exhaust at the point of leakage resulting in loss of service brakes and application of the emergency spring brakes. If the driver ignores the low air pressure warning light and buzzer and fails to pull off the road - crash
Safety Risk
No risk description available.
Remedy
No remedy description available.
209 vehicles affectedMfr ref: 4A14Updated June 10, 2026