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Data through Oct 2026
Campaign 91V-032

Parking brake drum attachment bolts may loosen and cause a driveline lockup condition when the bus is stopped or almost stopped

View NHTSA filingAll General Motors campaigns
Defect summary

THE PARKING BRAKE DRUM ATTACHMENT BOLTS MAY LOOSEN AND CAUSE A DRIVELINE LOCKUP CONDITION WHEN THE BUS IS STOPPED OR ALMOST STOPPED.

Consequence

DRIVELINE LOCK-UP COULD CAUSE LOSS OF VEHICLE CONTROLWITHOUT PRIOR NOTICE, AND RESULT IN A VEHICLE CRASH.

Remedy

REMOVE ALL OF THE PARKING BRAKE DRUM BOLTS, APPLY A RETAINING COMPOUND TO NEW BOLTS, AND TORQUE THE NEW BOLTS TO SPECIFICATION.

Notes

SYSTEM: TRANSMISSION MOUNTED PARKING BRAKES DRUM.VEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH HYDRAULIC BRAKES (JE3) ANDALLISON AT545 AUTOMATIC TRANSMISSIONS (MF1).

Source: NHTSA ODI recalls file, campaign 91V032000. 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 91V-032
MakeModelModel yearsComplaints on this component
ChevroletB61986 to 19900
GMCB61986 to 19900
Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.