GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2003 🢒 H2 🢒 Driveline/Axle 🢒 Transfer Case - BW 4484 🢒 Transfer Case Motor/Encoder Replacement

Removal Procedure

    Object Number: 819575 Size: SH
  1. Remove the transfer case shield. Refer to Transfer Case Shield Replacement .
  2. Disconnect the encoder motor electrical connector.
  3. Remove the encoder motor bolts.
  4. Remove the encoder motor.
  5. Remove the actuator insulator.

Installation Procedure

Important: 

   • If the encoder motor is being replaced, 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.


    Object Number: 819575 Size: SH
  1. Apply a 3.175 mm (1/8 in) bead of RTV sealant GM P/N 12345739 (Canadian P/N 10953541) or equivalent to the sealing surface of the encoder motor.
  2. Rotate to align the shift detent lever with the encoder motor assembly and install the encoder motor.

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

  3. Loosely install the encoder motor mounting bolts.
  4. Loosely install the encoder motor bracket bolt.

    5. Tighten
    Tighten the Encoder motor mounting bolts and the bracket bolt to 10 N·m (89 lb in).

  5. Connect the encoder motor electrical connector.
  6. Install the transfer case shield. Refer to Transfer Case Shield Replacement .