EXCESS SHIFT EFFORT THM 700-R4 REVISED MANUAL DETENT SPRING

MODELS: 1982-83 LIGHT DUTY TRUCKS WITH THM 700-R4 TRANSMISSION

Beginning early January, 1983, all THM 700-R4 transmissions are being built with a revised manual detent spring assembly. This revision will reduce the amount of effort required to operate the transmission gear range selector.

To correct a customer comment of excessive range selector shift effort on a THM 700-R4 transmission built prior to January, 1983, replace the manual detent spring assembly. Use the following chart to determine the correct part number.

P/N TRUCK TYPES 8647353 "S" Trucks "C" Trucks "G" Vans

8642247 "K" Trucks

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.