Some 1982 through 1985 THM 125C transaxles may exhibit slipping in all ranges under hard acceleration and/or maneuvering operations. This condition may be caused by a oil pressure drop due to a cut or improperly seated oil strainer seal.
Oil strainer and seal kit P/N 8652910 (refer to Figure 1), which incorporates a lip type seal, entered production by Julian date 150. This kit can be used to replace oil strainer and seal kit P/N 8631951 (refer to Figure 2) on a 1982 through 1985 THM 125C transaxle that exhibits the slipping condition.
Either design can be used to service all years and all models as follows:
SERVICE INFORMATION
1. If repldcement of the oil strainer during transaxle service is necessary, remove the original seal from the case and use the new seal provided in the kit.
2. Always install the seal in the case first when installing the replacement oil strainer and seal assembly.
Refer to Section 7A of the appropriate Service Information Manual for removal and installation procedures.
For warranty purposes, use labor Operation K6500 for .6 hours.
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.