GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2009 🢒 I-290 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Transfer Case Encoder Motor Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

    2. Object Number: 1313605 Size: SH
  2. Disconnect the following from the encoder motor (7):
    3. • The electrical connector (8)
    • The vent hose

    Object Number: 1313608 Size: SH
  3. Remove the encoder motor mounting bolts.
  4. Remove the encoder motor (3) and O-ring seal (2) from the transfer case.

    5. Discard the O-ring seal (2).

Installation Procedure

Note: 

   • The actuator shaft in the transfer case may require rotating to the neutral position prior to installing the encoder motor.
   • Do not rotate the actuator shaft using the encoder motor.


    Object Number: 1313608 Size: SH
  1. Lightly lubricate the NEW O-ring seal (2) with clean transfer case fluid.
  2. Insert the O-ring seal (2) into the transfer case.

    3. Note: Ensure the encoder motor is seated flat against the transfer case.

  3. Position the encoder motor (3) to the transfer case , aligning the actuator shaft.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the encoder motor mounting bolts, with the heated oxygen sensor bracket (1).

    5. Tighten the encoder motor mounting bolts to 22 N·m (16 lb ft).


    Object Number: 1313605 Size: SH
  5. Connect the following to the encoder motor (7):
    6. • The electrical connector (8)
    • The vent hose
  6. Lower the vehicle.