AutoStatsIQ
Data through Oct 2026
Campaign 89V-121

Rear axle relay valves (one per axle) may not meet brake release timing requirements of fmvss 121

View NHTSA filingAll General Motors campaigns
Defect 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.

Source: NHTSA ODI recalls file, campaign 89V121000. Text as published by NHTSA.
Vehicles covered

2 product lines are covered

Owner complaints filed with NHTSA about brakes on these vehicles: 0, of which 0 involved a crash, fire, injury or death. Complaints are not verified by NHTSA.

Vehicles covered by campaign 89V-121
MakeModelModel yearsComplaints on this component
GMCBrigadier19880
GMCGeneral19880
Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.