Assemblies may include halogen or incandescent test bulbs that should be replaced before installation.
Item Condition:New
Attention California Customers:
WARNING: This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
The bulbs are for testing and not covered under our warranty. Our warranty applies to the light assembly only.
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How to Replace Third Brake Light 2002-09 Chevy Trailblazer
How to Replace High Mount Third Brake Light 2002-06 GMC Envoy XL
Created on:
Tools used
Flat Blade Screwdriver
Needle nose pliers
Phillips Head Screwdriver
1. Removing the 3rd Brake Light
Open the tailgate and unplug the lead.
Pull the tailgate down open the window and lift the tailgate partially.
Remove the clip on the harness.
Pull the harness out.
Remove the two Phillips screws on the brake light.
Pull the light down and out. Unclip it from the truck.
2. Replacing the 3rd Brake Light
Put the light into place.
Run the harness back through the tailgate.
Replace the two Phillips screws.
Re-clip the harness.
Connect the lead.
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the internet.
Hi. I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20 plus years experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1A Auto.com. The right parts installed correctly. That's going to save you time and money. Thank you and enjoy the video.
In this video we're going to show you how to remove and replace the third brake light on this Chevy Trailblazer. The tools you will need are a flat blade screwdriver and a Phillips screwdriver and maybe a pair of pliers as well.
The third brake light is a sealed unit. It can fritz out on you. To replace it open up your tailgate and you can see the lead right here. You pull this little plug out and pull some wire out and there's your connector. What you want to do is pry up on the tab on one side. You can use a little screwdriver. Once you pry, then pull it out. Maybe what you want to do is pull up on here at the same time lift up your tailgate some and pull this wire through.
Right here it does go through a little clip. Get a pair of needle nose pliers and maybe a screwdriver to pull that clip off. Push in the round part of the harness right through there and just pull it right through. Now there's two screws in here. One over here. They are Phillips screws. Clip over here and there's your old light out. The new light from 1A Auto is the exact same. Take the protective film off and put it right up and in. You want to make sure it goes into this slot here first. Push it up and in. Put the wire through this retainer. Force it in. Put in your two screws. Now what you want to do is put this through. Bring the window down a little bit and stuff this rubber grommet in some. All right so we've got this stuffed most of the way there now. Bring it up and pull our lead through all the way. Take our clip and put it back in place. Connect our lead. Put it down and in. Push the rest of the wire in. Install the rubber grommet and we're all set.
We hope this helps you out. It was brought to you by www.1AAuto.com 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 are the company that's here for you on the internet and in person.
Tools used
Flat Blade Screwdriver
Phillips Head Screwdriver
1. Removing the Third Brake Light
Open the lift gate
Pull out the brake light wiring harness grommet
Disconnect the brake light wiring harness
Open the lift gate glass
Remove the three Phillips head screws from the brake light
Pull the wiring harness through its slot
Unclip the wiring harness from the brake light
Pull the brake light down and out
2. Installing the New Third Brake Light
Put the new brake light into place
Insert the three Phillips screws into the brake light
Open the lift gate
Feed the wiring harness thorough its slot
Connect the brake light wiring harness
Push in the wiring harness grommet
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace the third brake light on this 2003 GMC Envoy XL. It's the same part and similar process on the regular Envoys made after 2002. The items you'll need are a new third brake light from 1AAuto.com, a flat blade screwdriver, and a Phillips screwdriver.
Lift up your lift gate and pull on this grommet. Then, just keep pulling the harness out until you can get to the connector. Using a flat blade screwdriver, pry out on the tab and disconnect the harness. Now, open up the glass and remove these three Phillips screws. We'll just fast forward as Mike does that.Then, just pull the grommet and the harness up through this slot. Then, unclip it, and then just pull the third brake light down and out.
Up top, is the old third brake light. Below it, is the new one from 1A Auto. You can see they're identical and they'll fit exactly the same. Feed your new brake light up into place, and then replace those three Phillips screws. Now lift up your lift gate with the glass still open, and then just feed the harness down through the slot. Once you get it going, just open up your lift gate and pull it down and through the rest of the way. Make sure that it's on the right side of the hinge. Then, reconnect the harness and feed it back down into the hole and push the grommet back into place. Now, just test it out. You can see it works, so you're all set.
We hope this video helps you out. Brought to you by www.1AAuto.com, 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.
Product Reviews
Loading reviews
4.96/ 5.023
23 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
22
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David
February 6, 2017
Easy to order, confirmation sent, part was as advertised.
High Brake Light
Calvin
February 10, 2017
This piece fit exactly as advertised as an OE replacement. The video that showed how to replace the light was spot on. It actually was easier to install than to remove to old light.
cj - Evans, GA
Wonderful!
Kimberly
February 27, 2017
Great experience! Fast shipping and light works great! Fabulous price. Easy installation and happy customer! Buy with confidence!
Carmen
March 13, 2017
I would recommend this website and I would purchase again from it if needed because I was satisfied with my purchase
Third brake light
N
August 7, 2017
Light fit great. Works great too. I'm disappointed witht the tabs on the OEM frame it goes onto. They broke.
How to stop my wife from complaining
M
August 7, 2017
About the idiot light and brake warning ??. Watched the video, ordered the third brake light, saved over $100 vs Advanced Auto and my life happy ?? again...no more complaining wife Thanks 1aauto
Excellent
Michael
October 19, 2017
Fast service / Just what i needed / good prices
TY
Mike V
Great Price, Perfect Fit, and Got Quickly!!
Glen
January 29, 2018
I was actually pulled over not knowing my previous 3rd brake light had burned out. Needing an inspection in the next couple of weeks, it was imperative that I replace the old one ASAP. Advance Auto priced one for me and it was over $100 more that what I spent with 1A Auto! I knew I wasn't going to spend that much for a 3rd brake assembly but for grins checked w/Auto Zone and O'Reily Auto Parts. They too were way over priced. Obviously, the next thing I did was to go online and search other sources. I immediately found 1A Auto and the price was so low I could hardly believe it. To top it off, they had the exact youtube video I needed to reference how to remove the old one and replace it w/the one I just purchased. Lastly, same day FREEEEE shipping and got it in 2 days.
Just what I needed!!
M
April 26, 2018
I talked to a 1A rep on the phone as I had a fitment question. He assured me that the part was just what I needed. He was absolutely right. I was in the process of replacing the wing and the brakelight and needed assurance that this was the right part. Professional service is just what I needed. Quality part and prompt delivery. Thank You.
Great Service
M
May 2, 2018
I ordered my part, they double checked to make sure it was the correct part. It was, they sent it out and I received it in 3 days. Awesome experience. First time I have ever ordered any auto parts on line. I will order from 1A again, Thanks
third brake light
MELVIN
September 9, 2018
Perfect fit , outstanding price , will order all my parts and accessories from you , thanks again. R/S Melvin
Satisfied customer
S
November 12, 2018
Just like the video explained it. It match right up, just like the original. Satisfied once again
Just what I needed!!!
ROBERT
March 21, 2019
Great product!!! Badass price and fast shipping!! The bonus was the video on how to install this third break light and made installation easy as 1.2.3.!!! Will be buying from 1AAUTO in the future!!! Keep up the great work guys!
Easy to install, just like the video says
Marvin
April 4, 2019
I received this third brake light and watched the video once prior to installing. It was easy and it took me about 15 minutes total to remove the existing one and to install the new one. Awesome place to buy replacement parts.
The right part and it arrived on time
John
April 24, 2019
Got it when I needed it and easily installed as per 1A video.
Fits well, works great, great price
M
May 12, 2019
I was not sure how something like this would work. It arrived quickly, fitted the car perfectly, and works great. The youtube video for installation was awesome. I watched it a couple of times, and was able to get the installation done easily. Would definately recommend this part, and A1 Auto store in general.
I WILL ORDER AGAIN (ER)
R
July 6, 2019
Third tail light assembly fit perfect and was easily to find on the site. order came as promised and a very easy check out. And the movie on how to install was right on time.
Fantastic
Hunter
July 18, 2019
This product is super bright and its really high quality feeling. It fits my 2002 Bravada which has a different molding than 2003-04 which is awesome because I didnt have to change another piece out then. It works flawlessly and is brighter than the stock neon one.
What I needed.
T
November 21, 2019
The high level brake light replacement part fits and works exactly like the original. Car dealer wanted to replace the light and molding surrounding light for 10 times what I paid for just the light which is all that was needed. Video from 1A Auto showed me exactly how to replace the part.
Perfect Fit
D
December 6, 2019
This light was a reasonable price, it was shipped fast and it fit perfectly. I don't think a person could ask for anything more than that and yet I received more. I wasn't sure how to get to the screws so I watched onre of 1A's videos on how to do the R & R. So, in my book, it just don't get any better than this.
Susan
August 14, 2021
Works perfectly and half the price as the auto parts stores were going to charge.
A1 Auto to the Rescue
Joe
October 13, 2021
Thank you 1A Auto!! My local auto mechanic shop wanted to charge me $350 (part & labor) to replace the center brake light on my 2002 GMC Envoy. For $84.95 and 20 minutes of my time, I replaced it with no problems after I watched your online video. If you follow the directions from the video, you will not have any problems. Thank you once again A1 Auto.
Jeffrey
May 1, 2022
It Works Really Great.
Customer Q&A
does it come with trim doesn't show? so use old trim?September 10, 2020
M A
10
It comes with every thing you need I installed mine years ago and still working great
September 10, 2020
Chris O
10
Hello,
You will receive exactlywhat is pictured in the listing. Thanks!!
September 10, 2020
Adam G
Does this part fit a 2007 Buick Rendezvous?August 9, 2024
Ildefonso T
10
Currently, we do not carry this part for your vehicle. We're always updating our inventory so please check back soon!
August 10, 2024
Meghan R
Customer service
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Buick is a registered trademark of General Motors Company. 1A Auto is not affiliated with or sponsored by Buick or General Motors Company.See all trademarks.
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