SUN GEAR IDENTIFICATION GROOVE INFORMATION

BEGINNING MARCH 23, 1981, ALL THM 125 INPUT SUN GEARS WILL BE MANUFACTURED WITH AN IDENTIFICATION GROOVE AS SHOWN IN FIGURE 1. THE INPUT SUN GEAR MUST BE INSTALLED IN THE TRANSMISSION WITH THIS IDENTIFICATION GROOVE TOWARD THE INPUT DRUM HOUSING.

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.