Cause | Correction |
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Inspect for the proper gear oil levels prior to performing system diagnosis. Refer to Axle Lubricant Change . A light "clunk" type noise during a downshift is to be considered a normal condition. | |
Loose propeller shaft mounting bolts | Tighten the bolts as required. Refer to Propeller Shaft Replacement . |
Worn propeller shaft constant velocity joints | Replace the propeller shaft assembly. Refer to Propeller Shaft Replacement . |
Worn axle shaft constant velocity joints | Replace the constant velocity joints as required. |
Worn, loose, or missing differential mounts | Repair or replace the differential mounts as required. |
Loose torque tube bracket or a damaged bracket bushing | Tighten the bracket bolts or replace the bracket as required. |
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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