For 1990-2009 cars

# PARK TO DRIVE OR REVERSE DELAY 325-4L TRANSMISSION

1.PARK TO DRIVE OR REVERSE DELAYED ENGAGEMENT - THM 325-4L TRANSMISSIONS SOME "E" AND "K" SERIES MAY EXPERIENCE A PARK TO DRIVE AND/OR PARK TO REVERSE DELAYED SHIFT RESULTING FROM A LOSS OF PUMP PRIME. THIS CONDITION OCCURS DURING THE INITIAL START-UP AFTER THE VEHICLE HAS BEEN PARKED FOR AN EXTENDED PERIOD OF TIME. A NEW DESIGN TRANSMISSION FILTER, CONTAINING AN INTERNAL CHECK VALVE, HAS BEEN RELEASED TO CORRECT THIS CONDITION. THE SERVICE PACKAGE (P/N 8635927) CONSISTS OF: A.A NEW DESIGN OIL FILTER ASSEMBLY B.AN "O" RING SEAL C.AN OIL PAN GASKET NOTE: PART NUMBER REVISED 6/20/85. NEW PART NUMBER IS 8635981

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.