Constant Noise
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis 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 Inch, 9.5 Inch, 11.5 Inch Axles) , Drive Pinion and Ring Gear Replacement (9.75 Inch Axle) 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, 11.5 Inch Axles) , Drive Pinion Bearings Replacement (9.75 Inch Axle) or Drive Pinion Bearings Replacement (10.5 Inch Axle) . |
| Worn pinion splines |
Replace the pinion. Refer to Drive Pinion and Ring Gear Replacement (8.6 Inch, 9.5 Inch, 11.5 Inch Axles) , Drive Pinion and Ring Gear Replacement (9.75 Inch Axle) 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 Inch, 9.5 Inch Axles) , Rear Axle Shaft Replacement (9.75 Inch Axle) or Rear Axle Shaft and/or Gasket Replacement . |
| Worn hub studs |
Replace the wheel studs. Refer to Wheel Stud Replacement
in Rear Suspension. |
| Bent axle shaft |
Replace the axle shaft. Refer to Rear Axle Shaft Replacement (8.6 Inch, 9.5 Inch Axles) , Rear Axle Shaft Replacement (9.75 Inch Axle) or Rear Axle Shaft and/or Gasket Replacement . |