★★★★★
September 3, 2025
Looks great
Replaces
About TRQ:
TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Product Features
Assemblies may include halogen or incandescent test bulbs that should be replaced before installation.
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 part fits 3 vehicles spanning 2008-2014.
| Year | Make | Model | Description |
|---|---|---|---|
| 2008-2013 | Cadillac | CTS | Cadillac CTS with Halogen Headlights Driver & Passenger Side 2 Piece Headlight Set TRQ HLA88579 |
| 2014 | Cadillac | CTS | Cadillac CTS Wagon with Halogen Headlights Driver & Passenger Side 2 Piece Headlight Set TRQ HLA88579 |
| 2014 | Cadillac | CTS | Cadillac CTS Coupe with Halogen Headlights Driver & Passenger Side 2 Piece Headlight Set TRQ HLA88579 |
| Brand Label | Part Number |
|---|---|
| DIY Solutions | LHT02307 |
| Partslink Numbering System | GM2502309 |
| Cadillac | 25897357 |
| Hollander | 114-01122R |
| Cadillac | 25897358 |
| Cadillac | 19433120 |
| Cadillac | 22783445 |
| Eagle Eye Lights | GM539-B001R |
| Eagle Eye Lights | GM539-B001L |
| TYC | 20-6962-00 |
| Partslink Numbering System | GM2503309 |
| DIY Solutions | LHT02306 |
| Cadillac | 19433121 |
| Hollander | 114-01123L |
| TYC | 20-6961-00 |
This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that 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.
FREE Shipping is standard on orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii and Alaska.
Shipping is not available to a P.O. Box, APO/FPO/DPO addresses, US Territories, or Canada for this item.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii.
Final shipping costs are available at checkout.
Created on:
Tools used
Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!
In this video, we will be removing headlamps in this 2008 Cadillac CTS4, if you need this part, or other parts for your vehicle, click the link in the description, and head over to 1aauto.com.
Take these pins out. You're going to untwist them, and then once they're untwisted, you can pull them up. Just like that. Sometimes they don't untwist too well, so you got to like pry up underneath it. You can use your fingernail or a straight head screwdriver. We're going to pull this panel up and put it aside. And then I can pull this weatherstrip towards the center of the vehicle to take it off. We'll do the same with this side. Pull up here. Pull up there. There's a fastener right there and clip on the backside. We can take the weatherstrip towards the center. This piece will come right off.
We're going to pull these little clips out with a trim tool. We sell these at 1AAuto.com. Get it underneath that, in there. There should be another one there, but it's missing on this vehicle. And up here. Right there. I'm going to use a 10 millimeter socket and ratchet to take these two 10 millimeter bolts out. Okay, good. We're going to pull this push clip off. We're going to use a clip trim tool, and then there's one right here we need to pull off. Pull that off. This is just a rubber shield that's attached to the bumper. We're going to leave it attached to the car on this side. And, over here we'll do the same on the other side. This one's actually ripped right here, so we don't have to do that. And then, this piece over here, is already out, so we're all set on this side.
We're going to take these plastic push clips out. Use our trim tool again. Pull that out, and then we'll pull this one out. These other ones, we can leave in. Those just hold this front skirt on. Pull that out. Pull this one out too.
So we're going to disconnect the fog light. There's a little clip on the backside and then a clip on the front side. If you do them somewhat together, you can pull it down. Pull the backside clip off first, and you can pull on the front side, see? Two clips—pull them up. We can do the same for this side. Disconnect the fog light.
There's this air duct in here—you can pull that off. Looks like it's missing from the other side. This is there to force cool air onto the brakes while you're driving. This vehicle has headlight washers, so it sprays washer fluid on the headlights. So we're going to disconnect that. We're going to use some needle nose pliers, and pry this clip off. Move it to the side a little bit. We're going to take a right angle pick. Get in there. Then go all the way around to loosen up the hose, like that. We can twist it off. Just going to work the hose back and forth. And then it'll eventually come out.
All right, when I pull this off, fluid's going to come out, so I just have this random bolt, that's about the same size, so I'm going to plug the hole with that. Just like that and it'll keep the fluid in there, most of the fluid in there. Going to use my clip tool. Pull these, and pull these push clips off. Use our trim tool. Pull this one out. It had a little more play with this. The 10 millimeter bolt, right there, we're going to take out. That out. And that process would be the same for the other side. And then you can pull this off. Pull this out. Right over here. Pull it straight-forward.
We're going to take this headlight out. We have a 10 millimeter nut right here. It's a 10 millimeter bolt over here, and a 10 millimeter bolt up top here. So we're going to use a 10 millimeter socket and extension and a ratchet. Hold the light when I pull the top bolt out, so it doesn't fall. Should pull straight forward. Here you go. There's a connector right here. We're going to push down on the connector, and pull. And there's your headlight.
Attach the connector to the headlight, just push it in, lock it in. I'm going to align the headlight up. It's a little pin, right here. That's got to go in that hole. And then, this stud has to line up, as well. Push that in, it's all lined up. Put our nut down below. Put this bolt in, over here. You want to put all these bolts in, before you tighten them down. Now we can tighten them down. And last, this nut.
We're going to reinstall the bumper. Make sure that lines up over there. Line this up over here. Line that side up and that. We can take these two 10 millimeter bolts and put these in. We can snug these down. We're going to install this 10 millimeter bolt on the passenger side. When we're doing this, you're going to want to make sure the body lines up with the bumper. And then snug that down. Procedure will be the same for the driver's side.
Connect the fog light connector, line it up, and then push. It locks in place. Same on the passenger's side. All right, next we're going to reconnect our headlight washer hoses. Most of our fluid leaked out, but if you did this in a timely manner, you would have fluid coming out of that. Then we're going to move this clamp with some needle nose pliers, back to it's original location, right there. And that goes just like that.
We're going to reinstall this shield. Push that push-pin through up top. Push this one in down here, just like so. Same for the driver's side. Next, we're going to install this brake cooling snorkel on the passenger's side. Our driver's side was missing, so we're going to push this pushpin right there. Right there. Right here. Push pin there. One right here. And then, one right here.
All right, we're going to reinstall this liner. We're going to go up under here, and then to put the snorkel on, just going to click through like that, and we're going to put our push clips through there. Just follow these push clips right here, right here, and one right there. We're going to put our push clips in up top, here. Whoops.
Now, we're going to reinstall this shield. We're going to put this weatherstrip on like that. Same with the other side. Just like that. Now, we're going to use these clips. Reinstall these retainers. We're going to reinstall this cover here with that lined up. This is a little tab right there, that it lines up with. Lock that down. We're going to reinstall this right here, make sure you go under the weatherstrip over here, and press down.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
Looks great
HLA88579
Hello! Thank you for contacting us. The LED setup compared to the Halogen will have different wiring. You will not be able to just swap out the LED headlight assembly for the Halogen version. Modifications will need to be done.
These assemblies are intended for models with halogen bulbs. The bulbs are not included and will have tester bulbs which will need to be swapped out before installation.
New light bulbs are not included with this assembly. Occasionally, manufacturers leave test bulbs in the lights. If you receive test bulbs, you'll want to replace them with your original bulbs or with new bulbs.
Yes, if your vehicle came with AFL then this will be able to work as well.
