GMC · Canada · High
GMC T Series, S Series: Brakes
Affects GMC T Series, S Series · 1984–1985 — about 57K vehicles.
The hazard
On certain vehicles, rear backing plate corrosion may result in wheel cylinder rotation and possible loss of rear brakes with resultant increase in stopping distances. Correction: External wheel cylinder retainers will be installed. Backing plates will be inspected for rust-through and should this condition exist, a new backing plate and wheel cylinder assembly will be installed.
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