1ST/2ND GEAR SLIPS THM325-4L REPLACE ACCUMULATOR HOUSING

SOME 1983 THM 325-4L TRANSMISSIONS MAY EXHIBIT ONE OR MORE OF THE FOLLOWING CONDITIONS: 1. FIRST AND SECOND GEAR SLIPS 2. SLIPS ONLY IN SECOND GEAR WHEN HOT 3. 3-2 FLARE AT APPROXIMATELY 30 M.P.H. 4. BURNED BAND AND/OR DIRECT CLUTCH THE ABOVE CONDITIONS MAY BE CAUSED BY AN OVERSIZED 1-2 PISTON PIN HOLE IN THE ACCUMULATOR HOUSING (FIGURE 1). DURING SECOND GEAR OPERATION, THE PISTON WILL APPLY, BUT OIL MAY EXHAUST OUT THE OVERSIZED PIN HOLE, AND APPLY PRESSURE WILL BE LOST. WHEN SERVICING ANY 1983 THM 325-4L TRANSMISSION FOR ANY OF THE ABOVE CONDITIONS, CHECK THE 1-2 ACCUMULATOR PISTON PIN FOR A SLIP FIT. IF THE PIN FITS LOOSE IN THE PIN HOLE, THE ACCUMULATOR HOUSING MUST BE REPLACED. (ORDER PART NUMBER 8635935).

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.