For 1990-2009 cars

# 3RD/4TH CYCLING CRUISE CONTROL THM325-4L MODEL OE

SOME 1982 AND 1983 THM 325-4L, "OE" MODEL TRANSMISSIONS MAY EXPERIENCE A BUSYNESS CONDITION WHILE IN CRUISE CONTROL. "BUSYNESS", REFERS TO CYCLE SHIFTING BETWEEN FOURTH AND THIRD GEARS. THIS CONDITION IS MOST NOTICEABLE WHILE DRIVING UP INCLINES. BEGINNING FEBRUARY 2, 1983, A NEW CONTROL VALVE ASSEMBLY WENT INTO PRODUCTION FOR ALL 1983 THM 325-4L, "OE" MODEL TRANSMISSIONS TO CORRECT THIS BUSYNESS CONDITION. (THIS ASSEMBLY ALSO IMPROVES A HARSH 1-2 SHIFT AND A 2-3 SHIFT FLARE) WHEN SERVICING ANY 1982 OR 1983 THM 325-4L, "OE" MODEL TRANSMISSION FOR THIS BUSYNESS CONDITION, ORDER SERVICE PACKAGE NUMBER 8635953. THIS PACKAGE CONTAINS: 1 - CONTROL VALVE ASSEMBLY 1 - PRESSURE REGULATOR SPRING 1 - INTERMEDIATE SERVO CUSHION SPRING 1 - CONTROL VALVE SPACE PLATE 1 - 3-4 ACCUMULATOR SPRING 1 - INSTRUCTION SHEET REFER TO THE INSTRUCTION SHEET CONTAINED IN THE SERVICE PACKAGE AS WELL AS YOUR SERVICE MANUAL FOR THE PROPER REMOVAL AND INSTALLATION PROCEDURES OF THE ITEMS CONTAINED IN THIS PACKAGE. NOTE: TO COMPLETE THIS REVISION ON 1982 "E" SERIES, THE CRUISE CONTROL SERVO SHOULD BE CHECKED. IF THE SERVO HOUSING IS BLACK IN COLOR, IT SHOULD BE REPLACED WITH SERVO PART NUMBER 25031846, WHICH IS GRAY IN COLOR.

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.