DIESEL OIL PUMP DRIVE- DIFFICULTY WITH REMOVAL

WHEN AN OIL PUMP DRIVE SHAFT CONDITION IS ENCOUNTERED WHERE THE HEX IS ROUNDED OFF INSIDE THE VACUUM PUMP DRIVE GEAR THE SHAFT PART NUMBER 382157 AND THE VACUUM PUMP DRIVE UNIT PART NUMBER 7832145 SHOULD BE REPLACED. OCCASIONALLY DIFFICULTY IN THE REMOVAL OF THE VACUUM PUMP IS ENCOUNTERED AS THE OIL PUMP DRIVE SHAFT ROUNDS OUT IN THE VACUUM PUMP. TO EASE REMOVAL WHEN THIS IS ENCOUNTERED ROTATE THE ENGINE BACKWARDS APPROXIMATELY 1/4 TURN AND THEN, REMOVE VACUUM PUMP.

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.