GMC · Canada · High
GMC C7, C5 +1 more: Brakes
Affects GMC C7, C5, C6 · 1980–1982 — about 3K vehicles.
The hazard
On certain trucks equipped with the combination of bendix master cylinder and bendix handrovac frame mounted brake booster, air may be drawn into the brake system past the various seals. Air in the brake system could cause a loss of braking ability and result in vehicle 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