GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Driveline/Axle 🢒 Transfer Case - NVG 246-NP8 🢒 Transfer Case Encoder Motor Replacement

Removal Procedure

    Object Number: 829147 Size: SH
  1. Remove the transfer case shield. Refer to Transfer Case Shield Replacement .
  2. Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement .
  3. Disconnect the transfer case switch electrical connector (2).
  4. Disconnect the encoder motor electrical connector (7).

    5. Object Number: 857301 Size: SH
  5. Remove the encoder motor bolts.
  6. Remove the encoder motor.
  7. Remove the actuator insulator gasket.
  8. If replacing the encoder motor, remove the locating pins from the old motor.

Installation Procedure

Important: 

   • If the encoder motor is being replaced because it is defective, ensure that the transfer case is in the neutral position. Manually shift the transfer case at the shift shaft, using a crescent wrench if necessary.
   • When installing the encoder motor, ensure that the encoder motor is indexed correctly and the motor is flat against the transfer case before tightening the bolts.
   • A NEW encoder motor does NOT come with locating pins.


    Object Number: 857328 Size: SH
  1. Install the locating pins to the NEW encoder motor.
  2. Position a NEW actuator insulator gasket to the transfer case.
  3. Install the encoder motor.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install encoder motor bolts.

    5. Tighten
    Tighten the bolts, in the sequence shown, to 20 N·m (15 lb ft).


    Object Number: 829147 Size: SH
  5. Connect the encoder motor electrical connector (7).
  6. Connect the transfer case switch electrical connector (2).
  7. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement .
  8. Install the transfer case shield. Refer to Transfer Case Shield Replacement .