United States 91V032000
General Motors, LLC
The problem
THE PARKING BRAKE DRUM ATTACHMENT BOLTS MAY LOOSEN AND CAUSE A DRIVELINE LOCKUP CONDITION WHEN THE BUS IS STOPPED OR ALMOST STOPPED.
Risk
DRIVELINE LOCK-UP COULD CAUSE LOSS OF VEHICLE CONTROLWITHOUT PRIOR NOTICE, AND RESULT IN A VEHICLE CRASH.
What owners should do
REMOVE ALL OF THE PARKING BRAKE DRUM BOLTS, APPLY A RETAINING COMPOUND TO NEW BOLTS, AND TORQUE THE NEW BOLTS TO SPECIFICATION.
Units 14044