Transfer Case Shudder or Binding. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 Envoy - 4WD 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Transfer Case Shudder or Binding

Cause	Correction
DEFINITION: A shudder felt during acceleration or a crow-hop or binding while turning, which may cause tire scuffing. Review the Symptoms - Transfer Case and perform the necessary inspections.
Incorrect transfer case fluid	Flush the transfer case and fill with the correct fluid. The active transfer case uses a blue fluid. Refer to Transfer Case Fluid Replacement .
Burrs on the clutch hub slots	Deburr the hub slots. If the hub slots are excessively worn, replace the clutch hub. Refer to Transfer Case Cleaning and Inspection in Transfer Case - NVG 126-NP4 Unit Repair.

Cause

Correction

DEFINITION: A shudder felt during acceleration or a crow-hop or binding while turning, which may cause tire scuffing.

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

Incorrect transfer case fluid

Flush the transfer case and fill with the correct fluid. The active transfer case uses a blue fluid. Refer to Transfer Case Fluid Replacement .

Burrs on the clutch hub slots

Deburr the hub slots. If the hub slots are excessively worn, replace the clutch hub. Refer to Transfer Case Cleaning and Inspection in Transfer Case - NVG 126-NP4 Unit Repair.