Cause | Correction |
|---|---|
Inspect for the proper gear oil levels prior to performing system diagnosis. | |
Loose propeller shaft mounting bolts | Tighten the bolts as required. Refer to Propeller Shaft Replacement in Propeller Shaft. |
Worn propeller shaft constant velocity joint | Replace the propeller shaft assembly. Refer to Propeller Shaft Replacement in Propeller Shaft. 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/repair the constant velocity joints as required. A worn axle shaft constant velocity joint may create a "clicking", "grinding" or "snapping" type noise. |
Transfer case noise | Refer to Diagnostic Starting Point - Transfer Case in Transfer Case - NVG 900. |
Worn or damaged axle mounting bushings (side) | Replace the bushings as required. A worn bushing may create a "clunk" type noise during acceleration or deceleration. |
Worn or damaged axle mounting bushing (rear) | Replace the bushings as required. A worn bushing may create a "clunk" type noise during acceleration or deceleration. |
Loose rear mounting bracket | Tighten bracket bolts as required. |
Loose or damaged prop guard | Repair or replace as required. A loose dust shield may contact the propeller shaft assembly and create a "scraping" or "grinding" type noise. |
Bearing noise within the axle 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 axle assembly created by incorrect gear backlash | A "whine" type noise will increase or decrease relative to the vehicle speed.
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