Transfer Case Grating Noise. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 Envoy - 4WD 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Transfer Case Grating Noise

Cause

Correction

DEFINITION: A faulty internal transfer case component that causes a growl or grinding noise in the transfer case.

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

Broken apply plate

Inspect for a broken apply plate. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 126-NP4 Unit Repair.

Faulty clutch pressure plate bearing

•	Inspect for a faulty clutch pressure plate bearing. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 126-NP4 Unit Repair.

•	Condition the transfer case components that are damaged from debris. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 126-NP4 Unit Repair.