Transfer Case Growl or Grinding Noise
WARNING: This page is about a different car, the 2004 Cadillac Escalade EXT, 2004 Cadillac Escalade ESV, and 2004 Cadillac Escalade. 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 while the vehicle is turning.
Review the Symptoms - Transfer Case and perform the necessary inspections. |
| Planetary differential |
- Inspect the planetary differential pinion gears for the following conditions:
- Inspect the planetary differential for deformation. Refer to
Cleaning and Inspection
in Transfer Case - BW 4481-NR3 Unit Repair.
- Replace the planetary differential assembly if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - BW 4481-NR3 Unit Repair.
|
| Sun gears |
- Inspect the sun gears for the following conditions:
- Replace the sun gears if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - BW 4481-NR3 Unit Repair.
|
| Thrust washer |
- Inspect the thrust washer for seizure to the planetary differential.
- 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 - BW 4481-NR3 Unit Repair.
|
| Planetary differential not timed properly |
- Inspect the planetary differential for being timed properly. Refer to
Transfer Case Assemble
in Transfer Case - BW 4481-NR3 Unit Repair.
- Properly time the planetary differential gears. Refer to
Transfer Case Assemble
in Transfer Case - BW 4481-NR3 Unit Repair.
|