For 1990-2009 cars

# DIFFERENTIAL REPLACEMENT-125 DRIVERS-AXLE SIDE GEAR LOOSE

IT HAS BEEN NOTED BY SOME TECHNICIANS THAT THE SIDE GEAR CLEARANCE ON THE LEFT SIDE OF A DIFFERENTIAL CARRIER IS GREATER THAN THE CLEARANCE ON THE RIGHT SIDE. THE PROPER CLEARANCE ON THE LEFT SIDE OF THE CARRIER IS .023" TO .032", AND THE PROPER CLEARANCE FOR THE RIGHT SIDE IS .002" TO .005". CARRIERS SHOULD NOT BE REPLACED BECAUSE OF LOOSENESS ON THE LEFT SIDE. THE LOOSE FIT ON THE LEFT SIDE IS CORRECT, AS THE LEFT SIDE GEAR IS CENTERED THROUGH BACKLASH WITH ITS MATING GEARS (DIFFERENTIAL PINIONS), THUS PREVENTING CARRIER WEAR IN THE LEFT SIDE GEAR BORE.

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.