Constant Noise

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Constant Noise

Checks	Action
Flat spot on the pinion or the ring gear teeth	Replace the pinion and the ring gear. Refer to Drive Pinion and Ring Gear Replacement (8.6, 9.5/9.5LD, and 11.5 Inch Axles) or Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) .
Flat spot on the pinion bearing	Replace the bearing. Refer to Drive Pinion Bearings Replacement (8.6, 9.5/9.5LD, and 11.5 Inch Axles) .
Worn pinion splines	Replace the pinion. Refer to Drive Pinion and Ring Gear Replacement (8.6, 9.5/9.5LD, and 11.5 Inch Axles) or Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) .
Worn axle shaft dowel holes	Replace the axle shaft. Refer to Rear Axle Shaft Replacement (8.6, 9.5/9.5LD Inch Axles) or Rear Axle Shaft Replacement (8.6 Inch Axle w/Drum Brakes) or to Rear Axle Shaft and/or Gasket Replacement .
Worn hub studs	Replace the wheel studs. Refer to Wheel Stud Replacement .
Bent axle shaft	Replace the axle shaft. Refer to Rear Axle Shaft Replacement (8.6, 9.5/9.5LD Inch Axles) or Rear Axle Shaft Replacement (8.6 Inch Axle w/Drum Brakes) or Rear Axle Shaft and/or Gasket Replacement .