GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 GMC C Sierra - 2WD 🢒 Body and Accessories 🢒 Doors 🢒 Door Lock Cylinder Replacement

Removal Procedure
  1. Raise the window completely.
  2. Remove the front door trim panel. Refer to Front Side Door Trim Panel Replacement .
  3. Remove the water deflector. Refer to Front Side Door Water Deflector Replacement .
  4. Remove the outside door handle. Refer to Door Outside Handle Replacement .

    5. Object Number: 348455 Size: SH
  5. Remove the clip that retains the lock cylinder lever to the lock cylinder.
  6. Remove the lock cylinder retainer. Remove the lock cylinder from the outside door handle.

Installation Procedure

    Object Number: 348455 Size: SH
  1. Install the lock cylinder into the outside door handle.
  2. Install the clip.
  3. Install the outside door handle. Refer to Door Outside Handle Replacement .
  4. Install the front door water deflector. Refer to Front Side Door Water Deflector Replacement .
  5. Install the front door trim panel. Refer to Front Side Door Trim Panel Replacement .