Transfer Case Whine or Rumble Noise

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Cause	Correction
DEFINITION: A faulty internal transfer case component that causes a whine noise in the transfer case. Review the Symptoms - Transfer Case and perform the necessary inspections.
Faulty bearings	Inspect all of the bearings and journals. Refer to Transfer Case Cleaning and Inspection . Replace any faulty bearings, and any components with faulty bearing journals. Refer to Transfer Case Disassemble and Transfer Case Assemble .
Worn or loose chain	Inspect for a loose chain, excessive wear on the snubber or deep gouges in the lining. Replace the chain, sprockets and snubber. Refer to Transfer Case Disassemble and Transfer Case Assemble .