Cause | Correction |
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DEFINITION: A noise heard in the rear axle during all driving conditions. This noise may increase or decrease in volume based on different driving maneuvers and speeds. | |
Inspect for the proper gear oil levels prior to performing system diagnosis. Refer to Axle Lubricant Change . | |
Low gear oil levels | Faulty oil seal or other type external leaks may contribute to lower than required fluid levels. Refer to Rear Differential Carrier Leak Diagnosis . Fill to proper level with gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
Worn, loose, or missing differential mounts | Repair or replace the differential mounts as required. |
Worn propeller shaft constant velocity joints | Replace the propeller shaft assembly. Refer to Propeller Shaft Replacement . |
Worn bearing in the torque tube assembly | Replace the torque tube assembly. |
Bearing noise within the differential assembly A "grinding" or "roar" type noise will increase or decrease relative to the vehicle speed. |
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Gear set "whine" noise within the differential assembly A "whine" type noise will increase or decrease relative to the vehicle speed, approximately 80-97 km/h (50-60 mph). |
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