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How to Replace Tail Light Circuit Board 02-06 GMC Envoy XL

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How to Replace Tail Light Circuit Board 02-06 GMC Envoy XL

Created on: 2014-08-21

How to install, repair, fix, change or replace a broken, damaged, or burned out, tail light circuit board on 02, 03, 04, 05, 06, 07, 08, 09 GMC Envoy.

  1. step 1 :Removing the Taillight
    • Open the lift gate
    • Remove the two Phillips screws from the taillight bracket
    • Disconnect the headlight wiring harness
  2. step 2 :Removing the Circuit Board and Servicing the Bulbs
    • Remove the three Phillips screws from the circuit board
    • Pull the circuit board out
    • Pull the bulb off of the socket
    • Push on the new bulb
    • Push the bulb onto the socket
    • Push the circuit board into the light
    • Insert and tighten the three Phillips screws into the circuit board
  3. step 3 :Installing the New Taillight
    • Push in the tabs on the plate on the old taillight and remove it
    • Connect the plate to the new taillight
    • Reconnect the wiring harness to the taillight
    • Line up the bolt holes on the taillight bracket to the bolt holes on the vehicle
    • Replace the two Phillips screws into the taillight bracket

Tools needed for replacement

  • Screwdrivers & Related

    Phillips Head Screwdriver

Installation Video
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Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and the next time you need a part for your vehicle, think of Thanks.

In this video, we're going to show you how to service the bulbs as well as replace the taillight circuit board on this 2003 GMC Envoy XL. It's the same part and similar process on the regular Envoys made after 2002. We show you on the passenger side, but the driver side is the same procedure. The items you'll need for this include a new taillight circuit board from and a Phillips screwdriver.

Start off by opening your lift gate and removing these two Phillips screws on the inside of the taillight. Pull the taillight out, tilt it back, push the tab on this harness, and disconnect it.

To remove the circuit board to get to the bulbs, remove these three Phillips screws. To service the bulbs, pull the plate out, pull the bulb straight out, and push your new bulb into place. These two are the same process.

If you're looking to replace the taillight circuit board, you can see on the left is the old one; on the right is the new one from 1A Auto. They're identical. All you have to do is swap over the bulbs.

Push the taillight circuit board into the taillight and replace those three Phillips screws. You can see there are two holes here. They should have clips in them. One of them does. One of them's missing. Sometimes they come out with the taillight. Just pull them off that pin on the taillight and push the clip back into place.

Line up these two pins. Push them into those holes. First, reconnect your harness, then push the taillight back into place. Replace those two Phillips screws. You're all set.

We hope this video helps you out. Brought to you by, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    Screwdrivers & Related

  • Phillips Head Screwdriver

2002 - 2005  GMC  Envoy
2002 - 2009  GMC  Envoy
2002 - 2006  GMC  Envoy XL
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