GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 4WD 🢒 Body Hardware and Trim 🢒 Interior Trim and Paneling 🢒 Front Side Door Lock Actuator Replacement

Removal Procedure
  1. Remove the door trim panel. Refer to Front Side Door Trim Panel Replacement.
  2. Remove the water deflector. Refer to Front Side Door Water Deflector Replacement.
  3. Remove the door latch assembly. Refer to Front Side Door Latch Replacement.

    4. Object Number: 739852 Size: SH
  4. Remove the 2 screws that retain the actuator (1) to the lock.

    5. Object Number: 747835 Size: SH
  5. Simultaneously lift up on and rotate the actuator away from the latch in order to disengage the rubber bumper (1) from the latch.
  6. Remove the actuator from the latch.

Installation Procedure

    Object Number: 747835 Size: SH
  1. Install the rubber bumper (1) to the latch.
  2. Rotate the actuator toward the latch in order to fully engage the rubber bumper into the latch.

    3. Note: Ensure that the first tooth of the gear on the actuator and the first tooth of the gear on the latch align and interlock properly.


    Object Number: 747836 Size: SH
  3. Install the actuator to the top of the latch.

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


    Object Number: 739852 Size: SH
  4. Install the 2 screws that retain the actuator (1) to the lock.

    5. Tighten
    Tighten the screws to 0.75 N·m (6 lb in).

  5. Install the lock to the door. Refer to Front Side Door Latch Replacement.
  6. Install the water deflector. Refer to Front Side Door Water Deflector Replacement.
  7. Install the door trim panel. Refer to Front Side Door Trim Panel Replacement.