GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Sonoma Pickup - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - NVG 233-NP1 (Two Speed Selectable) 🢒 Motor/Encoder Replacement

Removal Procedure

    Object Number: 707039 Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the transfer case shield. Refer to Shield Replacement.
  3. Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement.

    4. Object Number: 662851 Size: SH
  4. Remove the motor/encoder electrical connector.

    5. Object Number: 857301 Size: SH
  5. Remove the motor/encoder mounting bolts.
  6. Remove the motor/encoder assembly.

Installation Procedure

    Object Number: 857301 Size: SH

    Important: When performing this service procedure, make sure that the motor/encoder unit is flat against the transfer case for proper installation.

  1. Install the motor/encoder to the transfer case.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install motor/encoder mounting bolts.

    3. Tighten
    Tighten the motor/encoder mounting bolts to 20 N·m (15 lb ft).


    Object Number: 662851 Size: SH
  3. Install the motor/encoder electrical connector.
  4. Install the transfer case shield. Refer to Shield Replacement.
  5. Lower the vehicle. Refer to Lifting and Jacking the Vehicle.