1. Prepare the tools: You'll likely need a Phillips head screwdriver, possibly a trim removal tool (plastic pry tool to avoid scratching), and potentially a 10mm socket (depending on the specific fastening method).
2. Access the lamp housing: This is usually located on the tailgate, near the license plate itself. You might need to remove or partially remove the license plate first.
3. Remove the housing:
* Look for screws: Carefully inspect the area around the lamp housing for screws. They are often located on the inside edges or at the top and bottom of the lamp assembly. Remove these screws.
* Detach clips: There are likely plastic clips holding the lamp assembly in place. Use a trim removal tool to gently pry the housing away from the tailgate. Work your way around the perimeter, carefully releasing the clips. Be gentle to avoid breaking the plastic clips.
* Disconnect the electrical connector: Once the housing is mostly free, carefully disconnect the electrical connector leading to the license plate light. There's usually a small release tab you need to push or squeeze to release the connector.
4. Install the new housing:
* Connect the electrical connector: Carefully connect the new lamp housing's electrical connector to the vehicle's wiring harness. Make sure it clicks securely into place.
* Secure the housing: Align the new lamp housing with the existing holes and carefully push it into place. Make sure all the clips are properly engaged.
* Replace the screws: If screws were used, reinsert them and tighten them securely.
5. Test the light: Reconnect the negative battery terminal and test the new license plate light to ensure it's functioning correctly.
Important Considerations:
* Pictures: Before you start, take pictures of the process. This will help you remember how everything goes back together.
* Gently does it: Use caution when prying to avoid breaking any clips or damaging the plastic.
* Replacement parts: Ensure you purchase the correct replacement lamp housing for your specific 2003 Chevy Tahoe model. Parts stores can help you identify the right part based on your VIN.
If you are uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. This is a relatively simple repair, but damaging the clips or the tailgate could make it more expensive.