HALF-SHAFT/PROPSHAFT CLINKING NOISE DURING TORQUE CHANGES

Model and Year 1984 CORVETTE

Some 1984 Corvettes may exhibit a clinking type noise during torque reversals, brake torquing or acceleration. This noise condition may be coming from between the yokes and tubes of the half-shafts and propshaft.

Vehicles exhibiting this condition can be corrected by spraying LPS3 Heavy Duty Rust Inhibitor*, or equivalent, available from automotive and/or industrial supply stores, into the half-shafts and propshaft as installed in the vehicle following the procedure below:

1. Insert paper clip or wire into nozzle extension provided with LPS3 Heavy Duty Rust Inhibitor (11 oz. aerosol can). Heat extension and bend as illustrated below and then remove paper clip or wire.

2. Insert short tip of modified nozzle extension into vent hole of half-shaft or propshaft yoke at the differential end of the assembly being lubricated (Figure 1). Spray lubricant into each half-shaft for 20 seconds and prop- shaft for 30 seconds. Aerosol can should be maintained in as vertical a position as possible to insure proper volume of lubricant is injected into each component. Elimination of noise may require accumulation of approxi- mately 200 miles after lubricant injection.

*Information regarding material availability can be obtained by calling the following toll free number of Holt Lloyd Corporation, 1-800-241-8334.

Labor Operation Number: T1101

Labor Time : .3 hours

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.