GMC · Canada · Crit
GMC C Series: Wheels
Affects GMC C Series · 1984–1985 — about 6 vehicles.
The hazard
On certain C30 vehicles, the Firestone 16x6 disc wheels may crack in the drop centre portion of the rim. If a crack were to occur on a wheel with a tube type tire mounted to it and remain undetected, the crack could spread and eventually split the wheel resulting in rapid air pressure loss from the tire. This could cause loss of vehicle control and crash without prior warning.
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