For 1990-2009 cars

# DRIVE SPROCKET TO SPROCKET NEW SUPPORT THRUST WASHER

A NEW SERVICE DRIVEN SPROCKET TO DRIVEN SPROCKET SUPPORT THRUST WASHER HAS BEEN RELEASED FOR THE FIRST DESIGN DRIVEN SPROCKET SUPPORT FOR THE THM 125 TRANSMISSION. THIS CHANGE ALSO AFFECTS THE CASE COVER GASKETS. WHEN REASSEMBLING WITH THE FIRST DESIGN DRIVEN SPROCKET SUPPORT, USE THE SECOND DESIGN GASKETS AND THE FIRST DESIGN SERVICE (RED) DRIVEN SPROCKET SUPPORT THRUST WASHER. (PART NUMBER 8631981) THESE PARTS ARE OUTLINED BY A DASHED LINE ON THE ILLUSTRATION. THE FIRST DESIGN DRIVEN SPROCKET SUPPORT AND CASE TO CASE COVER GASKETS ARE NOT AVAILABLE FOR SERVICE, THE SECOND DESIGN DRIVEN SPROCKET SUPPORT AND CASE TO CASE COVER GASKETS MUST BE USED. NOTICE: INCORRECT COMBINATION OF THESE PARTS MAY RESULT IN THE FOLLOWING CONDITIONS: A.GASKET DISTORTION B.OIL LEAKS C.LOSS OF BOLT TORQUE D.DAMAGED NEEDLE BEARINGS

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.