This bulletin is being published to provide G.M. Dealerships with information necessary to obtain replacement parts for locking wheel nut systems. Included are reproducible copies of order forms for the two (2) suppliers of locking wheel nut systems used in 1989 G.M. vehicles, Amcor and McGuard.
For initial orders to either Amcor or McGuard, please make copies of the included order forms. Additional forms will be sent by Amcor or McGuard when an order is received, or can be obtained by telephone request (see order forms for telephone numbers).
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.