STEERING WHEEL VIB. MOAN NOISE NEW P/N STRG. RETURN HOSE

Model and Year: 1985-86 CAVALIER WITH 2.8L V-6 (VIN CODE W) ENGINE

TO: ALL CHEVROLET DEALERS

Some 1985 and 1986 Cavaliers equipped with 2.8L V-6 engines may exhibit a stearing wheel or stearing column vibration and/or a booming or moaning noise while the steering wheel is turned with the engine idling. This condition may be caused by power steering fluid resonance in the return hose assembly between the steering gear and the stearing cooler pipe.

To correct this condition a new return hose assambly has been released, P/N 26003798 for installation on involved vehicles.

This return hose assembly consists of a coupled hose and pipe which has been specially tuned to significantly reduce vibration. Because of thess special characteristics, the new return hose assembly should not be shortened or modified in any way.

When attaching the new hose to the cooler inlet pipe this connection is to be made using two clamps installed as shown in View A.

After installation of the new return hose assembly, inspect the system to ensure that the hose and pipe are properly positioned and are not contacting other parts of the car. Contact of the hose or pipe with the cowl may allow stearing noise to be transmitted into the passenger compartment.

Use applicable labor operation and time.

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.