http://auto-recalls.justia.com GMC:B6:1986 Recalls http://auto-recalls.justia.com/content/91V032000-GMC-B6-1986.html THE PARKING BRAKE DRUM ATTACHMENT BOLTS MAY LOOSEN AND CAUSE A DRIVELINE LOCKUP CONDITION WHEN THE BUS IS STOPPED OR ALMOST STOPPED. Thu, 28 Feb 1991 00:00:01 EST