EXCESS SHIFT EFFORT THM 700-R4 REVISED MANUAL DETENT SPRING

BEGINNING EARLY JANUARY, 1983, ALL THM 700-R4 TRANSMISSIONS, EXCEPT THOSE USED IN 'D' TRUCKS, WERE 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 CAR/TRUCK TYPES 8647343 - 'S' TRUCK 'B' CAR 'F' CAR 'Y' CAR 'C' TRUCK 'G' VAN 8642247 - 'D' TRUCKS '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.