GM Service Manual Online
For 1990-2009 cars only

Cause

Correction

DEFINITION: A moaning noise occurs when driving the vehicle at various speeds.

Propeller shaft rev limiter/snubber contacting the driveline tube - manual transmission applications only

A rev limiter/snubber that is contacting the driveline tube may create a moaning type noise and/or vibration that is felt through the shift lever. Slight noise and vibration is to be considered normal during an over-speed condition but should not be present when the over-speed condition has ceased.

Replace components, as required.

Rear Axle Gear Noise

Gear noise can transfer from the rear axle through the driveline tube. Refer to Symptoms - Rear Drive Axle .