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How to Replace Headlight Housing 08-14 Cadillac CTS

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  1. step : Removing the Bumper (0:33)
    • Untwist the pins along the radiator shield and pull them out
    • Remove the shields by pulling up
    • Pull the weatherstripping up
    • Pry the push clips out from atop the bumper with a trim tool
    • Remove the 10mm bolt from the bracket
    • From behind the bumper, pry out the trim clips from the rubber shield on side of the grille
    • Pry out the push clips from beneath the bumper with a trim tool
    • Disconnect the fog light wiring harness
    • Pull the air duct on each side down and out
    • Loosen the hose clamp on the headlight washer hose with needle nose pliers
    • Pry off the hose with a right angle pick
    • Insert a bolt to the end of the hose to block fluid
    • Pry out the push clips in the wheel well
    • Pry back the wheel well liner
    • Remove the 10mm bolt on each side from behind the wheel well liner
    • Pull the bumper back and off the vehicle
  2. step : Removing the Headlight Housing (7:55)
    • Remove the two 10mm nuts from the headlight
    • Pull the headlight straight-forward
    • Disconnect the electrical connector
  3. step : Installing the Headlight Housing (9:22)
    • Connect the electrical connector
    • Press the headlight into place
    • Tighten the 10mm nuts to the headlight
  4. step : Installing the Bumper (10:46)
    • Press the bumper into place
    • Tighten the 10mm bolts to the bracket behind the grille
    • Tighten the 10mm bolts to the grille behind the wheel well
    • Insert the wheel well into place
    • Press the push clips to the wheel well
    • Connect the fog light connector
    • Remove the bolt from the headlight washer hose
    • Connect the hose to the washer pump
    • Tighten the hose clamp with needle nose pliers
    • Reinstall the shield to the side of the grille
    • Press on the push clips beneath the bumper
    • Attach the air duct to each side
    • Press the push clips atop the bumper into place
    • Press on the weatherstripping
    • Clip in the protective shields
    • Press on the push clips to the top of the shields

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

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 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.

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Tools needed for replacement:

    General Tools

  • Pick

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 7mm Socket
  • 10mm Socket

  • Specialty Tools

  • Trim Tool Set

2008 - 2013  Cadillac  CTS
2014 - 2014  Cadillac  CTS

08 Cadillac CTS; 09 CTS-V; 09-11 CTS Halogen Headlight PAIR

Cadillac CTS Driver & Passenger Side 2 Piece Headlight Set Halogen DIY Solutions LHT03657

This part replaces:

  • Hollander 114-01123L
  • Hollander 114-01122R
  • Partslink GM2502309
  • Partslink GM2503309
  • OE # 25897357
  • OE # 25897358

Part Details

  • Light Option: Halogen
  • Set Quantity: 2 Piece
  • Kit Includes: (2) Headlights
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