Intermittent Noise
| Cause | Correction |
|---|---|
| Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. Refer to Transfer Case Fluid Replacement . | |
| Incorrect gear oil in the transfer case case | Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Loose propeller shaft mounting bolts | Inspect the bolts and replace and tighten, as required. Refer to Propeller Shaft Replacement . |
| Transfer case bearing or rear drive axle clutch module A chatter or ratcheting type noise during hard acceleration on tight turns. | Confirm noise is coming from the transfer case or the rear drive axle clutch module. Repair as required. Refer to Symptoms - Rear Drive Axle . |
Intermittent Noise
Constant Noise
| Cause | Correction |
|---|---|
| Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. Refer to Transfer Case Fluid Replacement . | |
| Low gear oil level | Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis , and Adhesives, Fluids, Lubricants, and Sealers . |
| Incorrect gear oil in the transfer case case | Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Worn propeller shaft constant velocity joints | Replace the propeller shaft assembly. Refer to Propeller Shaft Replacement . |
| Worn bearing in the differential assembly | Repair or replace the assembly as required. |
| Bearing noise within the transfer case A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A grinding noise that changes as a transmission shift occurs is not within the transfer case. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identity the location of the noise using the CH-39570 Chassis Ears. If the noise continues, repair or replace the internal components, as required. |
| Gear set whine noise within the transfer case A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A whine noise that changes as a transmission shift occurs is not within the transfer case. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identity the location of the noise using the CH-39570 Chassis Ears. If the noise continues, repair or replace the internal components, as required. |
Constant Noise