ALL 1987 REAR DRIVE PASSENGER CARS WITH LIMITED-SLIP DIFFERENTIALS
"Please discard bulletin 87-7-3. This bulletin was put in Section 7 in error and the part numbers were incorrect."
Several changes have been made to the limited-slip rear axle lubricant service change recommendations.
The following information may not be reflected in all 1987 service manuals, update as necessary.
LIMITED-SLIP DIFFERENTIAL LUBRICATION
Grand Prix All 1052271 Do Not Use
Firebird Rear Disc Brakes 1050010 Do Not Use
Firebird All Others 1052271 Do Not Use
Safari Wagon models require a lubricant change at 7,500 miles.
Firebird and Grand Prix models require a lubricant change at 7,500 miles only if they are used for pulling a trailer.
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.