1. Access the Brake Light:
* Open the Liftgate: Open the rear liftgate of your Tahoe.
* Locate the Light Assembly: The third brake light is usually located at the top of the liftgate, integrated into the trim.
* Remove the Trim Cover (This is the most variable step): This is where things differ slightly depending on the exact trim level and any potential after-market modifications. You'll likely need to carefully pry off a trim panel or cover surrounding the brake light.
* Look for clips: These are usually plastic clips holding the cover in place. Start by gently prying at the edges of the cover with a flat, plastic trim tool or a dull knife (to avoid scratching). Work your way around the perimeter, releasing the clips. Take your time and be gentle! Broken clips are a common problem if you're too forceful.
* Screws: In some cases, there might be small screws holding the trim piece in place. Check for these before prying.
2. Access and Replace the Bulb:
* Once the cover is removed: You should have access to the bulb socket. It might be held in place by a twist-lock mechanism or a simple clip.
* Disconnect the bulb: Gently twist or press the bulb socket to release it from its mounting.
* Remove the Bulb: Carefully remove the burned-out bulb. *Note the orientation of the bulb before removing it.* This will help you install the new bulb correctly.
* Install the new bulb: Insert the new bulb, matching the orientation of the old one. Push it firmly into place until it clicks or locks.
* Reconnect the socket: Make sure the bulb socket is properly reconnected.
3. Reassembly:
* Replace the Trim Cover: Carefully align the trim cover and reattach it by snapping the clips back into place or tightening the screws (if applicable). Ensure it's securely fastened.
* Test the Brake Light: Close the liftgate and test the brake light by pressing the brake pedal.
Important Notes:
* Bulb Type: Before you start, it's best to know the correct bulb type for your 2003 Tahoe. Check your owner's manual or a parts store website (using your vehicle's VIN) to be sure. This will ensure you purchase the right replacement.
* Gloves: Consider using gloves to avoid getting fingerprints on the plastic trim.
* Patience: The most challenging part is usually removing the trim cover carefully without breaking any clips. Take your time and be gentle!
* If you're uncomfortable: If you're not mechanically inclined, it's always best to take your vehicle to a qualified mechanic to have the brake light replaced. A faulty brake light is a safety hazard.
If you have trouble identifying your specific trim cover removal method, searching online for "2003 Chevy Tahoe third brake light replacement" along with images might help you visualize the process. Remember to specify your trim level (LS, LT, etc.) for more accurate results.
