WHEN SERVICING ANY THM 125/125C TRANSAXLE THAT NECESSITATES THE REPLACEMENT OF THE FINAL DRIVE ASSEMBLY, INSPECT THE CASE BUSHING FOR SIGNS OF WEAR OR SCORING. WHENEVER THE CASE BUSHING SHOWS SIGNS OF WEAR OR SCORING IT MUST BE REPLACED ...FOLLOW THE SERVICE PROCEDURE BELOW: 1. THE TRANSMISSION MUST BE DISASSEMBLED. 2. REMOVE THE RIGHT AXLE SEAL ASSEMBLY FROM THE TRANSMISSION CASE. 3. FOLLOWING GUIDELINES GIVEN IN YOUR SERVICE MANUAL, REMOVE THE WORN BUSHING, AND REPLACE WITH A NEW BUSHING (P/N 8631119).. 4. INSPECT THE CASE AND BUSHING FOR BURRS AND LOOSE ALUMINUM. REMOVE ALL LOOSE MATERIAL. 5. INSTALL A NEW RIGHT HAND AXLE SEAL ASSEMBLY (P/N 8643962). 6. REASSEMBLE THE ENTIRE TRANSAXLE FOLLOWING GUIDELINES IN YOUR S/M.
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.