This bulletin cancels and replaces GMC Truck Service Bulletin 91-5-48 (Corporate #965016). All copies of 91-5-48 should be discarded.
A new brake lining service kit is available that contains brake pads constructed of a new compound developed to reduce brake noise and squeal. It is important to understand that the new pad material will not totally eliminate brake noise. It can however reduce the noises to a level which is more acceptable.
The new brake lining service kit, GM Part Number 15649295 contains all components necessary to replace either the front or rear brake linings. To better resolve brake squeal and maintain the vehicle's originally designed brake balance (front to rear), both front and rear linings should be replaced at the same time. The new brake pads can be identified by the CBD812 edge code printed on the side of the pad material.
Part Number Description 15649295 Brake Lining Service Kit
Parts are currently available from GMSPO.
For vehicles repaired under warranty use:
Labor Operation Location Labor Time --------- ---------- ---------- H0042 Front 0.9 hr. H0043 Rear 1.0 hr.
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.