Transport CanadaCritical
1988 GMC C SERIESTransport Canada Recall #1993034
The official notice
Defect
On certain vehicles, the transmission fluid may be forced out of the vent tube due to heat generation in the transmission caused by trailering heavy loads at high speeds or high-load/off road use. If the vented transmission fluid comes in contact with the catalytic converter, the fluid could ignite resulting in a vehicle fire.
Safety Risk
No risk description available.
Remedy
Dealers will install a longer transmission vent hose routed to the left side of the vehicle.
125,711 vehicles affectedMfr ref: 3D08/93018Updated June 10, 2026