Transfer Case Whine or Rumble Noise. Cadillac STS 2005

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2005 🢒 STS 🢒 Driveline/Axle 🢒 Transfer Case - BW 4476/79 🢒 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	Inspect all of the bearings and journals. Refer to Transfer Case Cleaning and Inspection in Transfer Case - BW 4476/79 Unit Repair. Replace any faulty bearings, and any components with faulty bearing journals. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - BW 4476/79 Unit Repair.
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 in Transfer Case - BW 4476/79 Unit Repair.

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 in Transfer Case - BW 4476/79 Unit Repair.
Replace any faulty bearings, and any components with faulty bearing journals. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - BW 4476/79 Unit Repair.

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 in Transfer Case - BW 4476/79 Unit Repair.