GMC · Canada · Mod
GMC G Series, C Series: Fuel System
Affects GMC G Series, C Series · 1984 — about 379 vehicles.
The hazard
On certain propane fueled trucks, a crimp on the housing of the 80 percent shut-off valve at the tank, designed to prevent the valve stem from coming out of the housing may be missing. This allows the valve stem to be turned out beyond the intended limit. Should this occur, the possibility of propane leakage exists. Correction: By means of a specially designed tool, dealers will crimp any valves that may have this condition.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational