Transfer Case Popping Noise. GMC Truck Sierra Classic

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 2WD 🢒 Transmission/Transaxle 🢒 Transfer Case - NVG 149-NP3 🢒 Transfer Case Popping Noise

Cause

Correction

DEFINITION: A faulty internal transfer case component that causes a popping noise in the transfer case.

Review the Symptoms - Transfer Case and perform the necessary inspections.

Chain jump

•	Replace the chain and sprockets. Refer to Transfer Case Disassemble and Transfer Case Assemble.

•	Replace the shaft bearings. Refer to Transfer Case Disassemble and Transfer Case Assemble.

•	Inspect for damaged components caused by metal debris. Refer to Transfer Case Cleaning and Inspection.