Transfer Case Growl or Grinding Noise
WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Transfer Case Growl or Grinding Noise
| Cause |
Correction |
DEFINITION: A faulty internal transfer case component that causes a growl or grinding noise in the transfer case, usually while the vehicle is turning.
Review the Symptoms - Transfer Case and perform the necessary inspections. |
| Planetary carrier |
- Inspect the planetary carrier pinion gears for the following conditions:
- Inspect the planetary carrier for deformation. Refer to
Cleaning and Inspection
in Transfer Case - NVG 149-NP3 Unit Repair.
- Replace the planetary carrier assembly if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 149-NP3 Unit Repair.
|
| Annulus gear |
- Inspect the annulus gear for teeth damage or wear. Refer to
Cleaning and Inspection
in Transfer Case - NVG 149-NP3 Unit Repair.
- Replace the annulus gear if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 149-NP3 Unit Repair.
|
| Sun gear |
- Inspect the sun gear for the following conditions:
- Replace the sun gear if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 149-NP3 Unit Repair.
|
| Thrust washer |
- Inspect the thrust washer for seizure to the planetary carrier.
- Inspect the thrust washer for galling.
- Replace the thrust washer if faulty, and the mating component if damaged. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 149-NP3 Unit Repair.
|