Transfer Case Grating Noise. GMC Truck GMC Sierra Denali 2006

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Transfer Case Grating Noise

Cause	Correction
DEFINITION: A faulty internal transfer case component that causes a grating noise in the transfer case while in the AWD, 4HI, or 4LO mode. Review the Symptoms - Transfer Case and perform the necessary inspections.
Broken clutch apply plate	Inspect for a broken clutch apply plate. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair. Replace the apply plate and the transfer case components that are damaged from debris. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
Faulty clutch pressure plate bearing	Inspect for a faulty clutch pressure plate bearing. Refer to Transfer Case Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair. Recondition the transfer case components that are damaged from debris. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.

Cause

Correction

DEFINITION: A faulty internal transfer case component that causes a grating noise in the transfer case while in the AWD, 4HI, or 4LO mode.

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

Broken clutch apply plate

Inspect for a broken clutch apply plate. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
Replace the apply plate and the transfer case components that are damaged from debris. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.

Faulty clutch pressure plate bearing

Inspect for a faulty clutch pressure plate bearing. Refer to Transfer Case Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
Recondition the transfer case components that are damaged from debris. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.