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NHTSA Campaign 91V032000

PARKING BRAKE:DRIVELINE

Issued by GENERAL MOTORS CORP. · Reported Feb 19, 1991 · 14,044 vehicles affected

What's wrong

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.

Vehicles affected by this recall

Make Model Year Units
CHEVROLET B6 1986 14,044
CHEVROLET B6 1987 14,044
CHEVROLET B6 1988 14,044
CHEVROLET B6 1989 14,044
CHEVROLET B6 1990 14,044
GMC B6 1986 14,044
GMC B6 1987 14,044
GMC B6 1988 14,044
GMC B6 1989 14,044
GMC B6 1990 14,044

Source: NHTSA Campaign 91V032000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.