GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Body Rear End 🢒 Lock Rod and Outside Handle Replace - Rear Door

Removal Procedure
  1. Remove the trim panel, as necessary. Refer to Rear Door Trim Panel Replacement .
  2. Remove the water deflector, as necessary. Refer to Water Deflector Replacement .
  3. Remove the access hole cover, as necessary. Refer to Access Cover Replacement - Rear Door .

    4. Object Number: 277857 Size: SH
  4. Disconnect the lock cylinder rod from the rod clip.
  5. Disconnect the outside handle rod from the rod clip.
  6. Remove the outside handle mounting bolts.
  7. Remove the outside handle assembly.
  8. Remove the door lock cylinder from the outside handle housing.
  9. Complete the necessary procedures:
    10. • For repair of a binding lock cylinder, refer to Lock Cylinder Binding .
    • For coding a new lock cylinder, refer to Key and Lock Cylinder Coding in General Information.

Installation Procedure
  1. When installing a new lock cylinder, apply GM P/N 12345120 lubricant or a similar lubricant to the inside of the lock case and the cylinder keyway.
  2. Install the door lock cylinder to the outside handle housing.
  3. Install the handle assembly.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the outside handle mounting bolts.

    5. Tighten
    Tighten the bolts to 4 N·m (35 lb in).


    Object Number: 277857 Size: SH
  5. Connect the outside handle rod to the rod clip.
  6. Connect the lock cylinder rod to the rod clip.
  7. Install the access hole cover, as necessary. Refer to Access Cover Replacement - Rear Door .
  8. Install the water deflector, as necessary. Refer to Water Deflector Replacement .
  9. Install the trim panel, as necessary. Refer to Rear Door Trim Panel Replacement .