Beginning mid-August, 1981, the following 1982 THM 125C transmission models BF, BL, PL, PK, PI, CT, LE, CL, CV, CD, CS, OP, HM, HW and HS, were built with a new (wider) design intermediate band assembly (Service P/N 8637623) and a new designed direct clutch housing and drum assembly, (Service P/N 8637976). See Figure 1. The new design direct clutch housing has a wider surface finish area on the drum outside diameter to accommodate the new wider intermediate band assembly.
The narrow design direct clutch housing assembly Service P/N 8631928) can only be used with the narrow design intermediate band assembly (Service P/N 8631030). Do not use the narrow design direct clutch housing assembly with the wider design intermediate band assembly or interference will result.
WDDGM will notify dealers through sales information bulletin when parts are available.
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.