Cause | Correction | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Inspect for proper gear oil levels prior to performing system diagnosis. | |||||||||
Low gear oil levels | Faulty oil seals or other type leaks may contribute to lower than required fluid levels. Fill to the proper level with synthetic gear oil GM P/N 12368514 (Canada P/N 88901045). | ||||||||
Worn propeller shaft constant velocity joint | Replace propeller shaft assembly. Refer to Propeller Shaft Replacement. A worn propeller shaft constant velocity joint may create a clicking, grinding, or snapping type noise. | ||||||||
Worn or loose center bearing assembly | Replace the center bearing assembly, as required. A worn center bearing assembly may cause vehicle vibration or a grinding or squealing type noise. | ||||||||
Worn universal joints | Replace the universal joints, as required. A worn universal joint may create a clicking or snapping type noise. | ||||||||
Worn axle shaft constant velocity joints | Replace or repair the constant velocity joints, as required. A worn axle shaft constant velocity joint may create a clicking, grinding, or snapping type noise. | ||||||||
Bearing noise within transfer case | A grinding or roar type noise will increase or decrease relative to vehicle speed.
| ||||||||
Gear set whine noise within carrier assembly | A whine type noise will increase or decrease relative to vehicle speed, approximately 80-90 km/h (50-60 mph).
Contributing factors may include:
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