Transfer Case Growl or Grinding Noise

WARNING: This page is about a different variant/trim than selected.

Cause	Correction
DEFINITION: A faulty internal transfer case component that causes a growl or grinding noise from the transfer case. Review the Symptoms - Transfer Case and perform the necessary inspections.
Planetary carrier	Inspect the planetary carrier pinion gears for the following conditions: Chipped, bent or deformed teeth Pinion gear bushings worn Pinion gear thrust washers missing Seized or binding pinion gears Refer to Cleaning and Inspection . Inspect the planetary carrier for deformation. Refer to Cleaning and Inspection . Replace the planetary carrier assembly if faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble .
Annulus gear	Inspect the annulus gear for teeth damage or wear. Refer to Cleaning and Inspection . Replace the annulus gear if faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble .
Sun gear	Inspect the sun gear for the following conditions: Gear tooth failure Worn or galled thrust surfaces Refer to Cleaning and Inspection . Replace the sun gear if faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble .
Thrust washers	Inspect the thrust washers for seizure to the planetary carrier. Inspect the thrust washers for galling. Replace the thrust washers if faulty and the mating component if damaged. Refer to Transfer Case Disassemble and Transfer Case Assemble .