THM 200C TRANSMISSION MODEL PG CALIBRATION CHANGE. Buick Electra Estate Wagon 1981

For 1990-2009 cars

# THM 200C TRANSMISSION MODEL PG CALIBRATION CHANGE

BEGINNING WITH SERIAL NUMBER 81-PG-13935, A CALIBRATION CHANGE HAS BEEN MADE ON THE PG MODEL OF THE 200C TRANSMISSION. THIS CALIBRATION CHANGE WILL GIVE AN IMPROVED SHIFT FEEL ON THE 1-2 AND 2-3 SHIFTS. SERVICE INFORMATION: 1.ORDER SERVICE PACKAGE NUMBER 8633965 WHICH WILL CONTAIN: PART NUMBER INTERMEDIATE SERVO COVER "O" RING SEAL INTERMEDIATE OUTER SERVO PISTON OUTER OIL SEAL RING INNER OIL SEAL RING INTERMEDIATE INNER SERVO PISTON INNER OIL SEAL PISTON RING 1-2 ACCUMULATOR VALVE SPRING (COLOR-YELLOW) DIRECT CLUTCH EXHAUST SPRING (COLOR-RED) (2) COILED SPRING PINS ** ADDITION TEXT IN BULLETIN **

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.