For the purpose of reducing the potential for brake squeal on 1989 and prior non ABS models, re lace the current Service Kit Part Number 12321422 (Lining Edge Code 127 EE) with new Service Kit Part Number 12510004 (Lining Edge Code 117 FE).
Parts are currently available from GMSPO.
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.