GMC · Canada · Crit
GMC T70, T60 +3 more: Brakes
Affects GMC T70, T60, T80, Topkick C7500, Topkick C8500 · 2006 — about 118 vehicles.
The hazard
Certain trucks equipped with Bendix SR-7 spring brake modulating valves may experience an internal air leak if the check valve fails to seat. This may cause a delay in the application of the parking spring brakes leading to an unintended vehicle rollaway. Correction: Dealers will inspect and replace the valves as required.
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