Some late model 1986 Chevrolet, Pontiac and Oldsmobile 'A' style vehicles are equipped with a new style wiper arm. The new wiper arm provides better retention of the wiper arm to the splined transmission shaft end.
The vehicles are built at various plants and the VIN breakpoints are listed as follows:
Doraville Oldsmobile D426305
Framingham Chevrolet G136609 Oldsmobile G383044
Oklahoma City Chevrolet 6234071
Oshawa Chevrolet 1245232 Oldsmobile 9357367 Pontiac 9289155
Tarrytown Pontiac T269363
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.