The October 1984 and also the January and February 1985 issue of the warehousing Distribution Division General Motors (WDDGM) Parts Catalogue incorrectly lists some 1984 model year THM 125C Case Cover part Numbers.
Listed below are the model year, transmission models, and CORRECT service usage part number and identification.
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.