NHTSA recall 91V197000
Service brakes, air › Antilock
White GMC ACL42B and 1 more
Reported Nov 12, 199183 vehicles affectedVOLVO GM HEAVY TRUCK CORPBuilt Mar 1, 1983 – Jun 1, 1991
The defect
The parking brake may not exert sufficient force to enable the vehicle to conform to the grade holding requirements of fmvss 121.
The risk
Vehicles with insufficient parking brake force can rollwithout prior warning when parked on a grade, this could result in a vehicleaccident.
The remedy
Replace the parking brake chambers.