GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Driveline/Axle 🢒 Front Drive Axle 🢒 Front Drive Axle Actuator Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the engine shield, if equipped. Refer to Engine Shield Replacement.
  3. Disconnect the electrical connector from the actuator.

    4. Object Number: 1690919 Size: SH
  4. Remove the actuator (1) for the 8.25 inch axle (2) or (3) for the 9.5 inch axle (4) by turning the actuator counterclockwise.

Installation Procedure

    Object Number: 1690919 Size: SH
  1. Apply sealant to the threads of the actuator (1) for the 8.25 inch axle (2) or (3) for the 9.25 inch axle (4). Use the correct sealant. Refer to Sealers, Adhesives, and Lubricants .

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

  2. Install the actuator (1 or 3).

    3. Tighten
    Tighten the actuator to 20 N·m (15 lb ft).

  3. Connect the electrical connector to the actuator.
  4. Install the engine shield, if equipped. Refer to Engine Shield Replacement.
  5. Lower the vehicle.