There are two end play checking fixture adaptors available for checking end play on THM 700-R4 transmissions. See Figure No. 1.
J-34725 is used for 298 mm. style turbine shafts, and J-25022 is used for 245 mm. style turbine shafts.
Be certain to use the correct tool and follow the service manual procedure when checking end play.
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.