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Transfer Case Whine or Rumble Noise

WARNING: This page is about a different car, the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Cadillac Escalade EXT, 2012 Cadillac Escalade ESV, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Transfer Case Whine or Rumble Noise

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
  1. Inspect all of the bearings and journals. Refer to Transfer Case Cleaning and Inspection .
  2. Replace any faulty bearings, and any components with faulty bearing journals. Refer to Transfer Case Disassemble , and Transfer Case Assemble .
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