1. Locate the access panel: The third brake light is usually accessed from inside the vehicle, through a panel in the rear cargo area, above the liftgate. This panel is often held in place by clips or screws.
2. Remove the access panel: Carefully pry open the access panel. Use a plastic trim tool or a flat-head screwdriver (covered with cloth to avoid scratching) to gently release the clips. Don't force it.
3. Disconnect the light assembly: Once the panel is removed, you should see the third brake light assembly. There might be a connector holding the light assembly in place. Carefully disconnect this connector. Sometimes it's a simple pull, other times it has a latch.
4. Remove the bulb: The bulb itself might be held in place by a retaining clip or twist-lock. Gently remove the old bulb. Note the bulb's orientation before removing it—some bulbs have a specific way they need to be seated.
5. Install the new bulb: Insert the new bulb, ensuring it's seated correctly. Make sure it clicks into place.
6. Reconnect the light assembly: Reconnect the electrical connector.
7. Replace the access panel: Carefully put the access panel back in place and secure it with the clips or screws.
8. Test the brake light: Test the brake light to ensure it's working correctly.
Important Considerations:
* Bulb Type: Make sure you buy the correct replacement bulb. Check your owner's manual or the old bulb for the correct wattage and type. Auto parts stores can help you find the right one if you bring the old bulb with you.
* Gloves: It's a good idea to wear gloves to avoid getting fingerprints on the new bulb.
* Safety: Always turn off the vehicle and let the brake light cool down before attempting any repairs.
If you're uncomfortable performing this task yourself, it's best to take your Suburban to a qualified mechanic. They can do it quickly and safely.
