Due to design changes and service procedure revisions, disregard the 1988 and 1989 Service Manual Section 4A Propeller Shaft. When servicing an All Wheel Drive (AWD) vehicle use Section 4A Propeller Shaft located in the current 1990 Chevrolet Celebrity/Pontiac 6000 Service Manual.
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.