OFFICIAL NHTSA RECALL
89V121000
Service Brakes, Air:controls, Pedals And Linkages
Reported Jul 24, 1989 · GENERAL MOTORS CORP.
Summary
THE REAR AXLE RELAY VALVES (ONE PER AXLE) MAY NOT MEET BRAKE RELEASE TIMING REQUIREMENTS OF FMVSS 121.
Consequence
THE REAR AXLE BRAKES MAY NOT RELEASE IN THE TIMESSPECIFIED BY FMVSS 121.
Remedy
REPLACE THE NONCOMPLYING RELAY VALVES.
Notes
SYSTEM:REAR AXLE AIR BRAKE RELAY VALVES/FMVSS 121.VEHICLE DESCRIPTION:HEAVY DUTY TRUCKS.
This campaign page uses the representative official campaign record. Applicability-specific source variants appear on the linked vehicle pages. Recall counts refer to campaigns, not affected vehicles.
Vehicle entries in this campaign
This is model-level recall history. It does not confirm whether a particular VIN is affected or has received the repair. Check with NHTSA ↗