Tools You'll Likely Need:
* Screwdrivers: Phillips head and possibly flathead.
* Panel removal tools: Plastic pry tools to avoid scratching the interior trim.
* Sockets and ratchets: Sizes will depend on the specific fasteners; consult your repair manual.
* New rear door lock actuator: Make sure you get the correct part for your specific Suburban model (driver's or passenger's side).
* Possibly a small torx bit depending on your specific model.
General Steps:
1. Remove Interior Door Panel: This is usually the most challenging part. Start by removing the screws holding the armrest and any other visible fasteners. Then, carefully use panel removal tools to pry the panel away from the door. Work your way around the perimeter, being mindful of clips that may break. Many interior door panels use multiple plastic clips that tend to break if forced. Be gentle! There might be wiring harnesses connected; disconnect these carefully.
2. Access the Lock Actuator: Once the door panel is removed, you'll see the inner workings of the door. The lock actuator is usually located near the lock mechanism itself. You'll likely need to remove some screws or fasteners securing the actuator to the door. Again, your repair manual will be crucial here.
3. Disconnect the Wiring Harness: Carefully disconnect the electrical connector from the old actuator. Take a picture or note the connection points to ensure you reconnect it correctly later.
4. Remove the Old Actuator: Unscrew and remove the old actuator from its mounting position.
5. Install the New Actuator: Carefully align the new actuator and securely attach it using the screws or fasteners you removed earlier.
6. Reconnect the Wiring Harness: Reconnect the electrical connector to the new actuator, ensuring it's securely fastened.
7. Reinstall the Door Panel: Carefully reverse the steps you took to remove the door panel, ensuring all clips and screws are properly secured. Test the lock to ensure it's working.
Important Considerations:
* Power: Disconnect the negative battery terminal before starting the repair to prevent accidental short circuits.
* Clips: Interior door panel clips are notorious for breaking. Try to reuse them if possible, but have replacements on hand if needed.
* Repair Manual: A repair manual specific to your 1999 Chevy Suburban is highly recommended. It will provide detailed instructions, diagrams, and torque specifications. Don't skip this step.
* Alternative Solutions: Before replacing the actuator, consider if it's truly faulty. Sometimes, the problem might be a faulty wiring connection or a blown fuse. Check these first.
This is a general guide. The specifics will vary depending on your vehicle's exact configuration. If you're not comfortable working on your vehicle yourself, it's always best to consult a qualified mechanic. Attempting this repair without proper knowledge and tools could cause further damage.
