GMC · Canada · Crit
GMC Topkick C6, Topkick C7: Fuel System
Affects GMC Topkick C6, Topkick C7 · 2001–2002 — about 18 vehicles.
The hazard
Certain vehicles equipped with the 8.1L engine may have a condition where the fuel filter to component box mounting bolts are reversed. With the bolts reversed the threaded bolt end is orientated towards the front wall of the left hand fuel tank. In the event of a frontal collision the bolt could pierce the tank, resulting in fuel leakage which could result in a fire. Correction : Dealers will correctly install the bolts.
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