Question about 2005 Cadillac CTS

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Cadi CTS 05 Front Blinker / Running Light Bulb is out

I need to replace the front left bulb behind the amber lens, and might as well do it on both sides (I got 2 bulbs); but, it appears I need to remove the bumper, and the headlight asssembile(s), or I can pay Cadillac a few hundred $$ to do it for me. Is there a diagram and instructions on how to do this without having to buy a $200 shop manual? Thanx.

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  • vwa19 May 24, 2009

    I have a SRX (wagan) and I have taken of the plastic clips and looked inside and can get my hand in there but it looks like there is another plastic cover plate that needs to be removed. I see no clips?: what do you suggest?

  • Anonymous Mar 15, 2014

    2008 cadillac cts xenon headlight bulb replacement



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It is fairly simple to replace the turn signals on the CTS. You do not have to remove the whole bumper, just enough to let you inside behind the lights. Turn the steering wheels one way and remove the 4 clips around the bumper with a flathead screw driver. Then do it again to the other side. You can remove the top clips to give you more wiggle room. Look under the car and remove enough of the clips to loosen the sides. At this point you can stick in your hand from the wheel well and replace the lights. Just turn and pull and re-install the new lights. Simple.

Posted on May 17, 2009


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Bi-Xenons - 6000K D1S
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  • Turn the engine off and approach the side of the porsch with the burn-out side-marker light. If you are replacing both, start at either side; the replacement procedure is the same.
  • 2 Remove the screws from the plastic fender liner. Peel back the liner to access the area behind the fender.
  • 3 Reach your hand inside to gain access to the side-marker light's backing. Push the backing forward to release the side-marker lens; it's held in place by small clips.
  • 4 Grab the lens on the outer side and turn it over to access the back. Gently turn the bulb to release it from the plastic lens.
  • 5 Pull the bulb straight out to remove it from the electrical socket. Insert a new bulb, but do not touch the glass part of the bulb with your hand.
  • 6 Push the new bulb into the side-marker lens. Turn it clockwise to install it. Push the side-marker lens back into place. Apply gentle pressure to the lens to pop it back into its mount.
  • 7 Replace the screws along the edge of the fender liner.

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    How do I fix my left blinker? light still works but it sticks instead of blinks

    What you speak of as to the left blinker doesn't flash, yet the instrument cluster shows the green arrow (to the left), and yet that and the left turn signal lights do not flash, appears to be a simple burned out bulb. If one of your left turn signal bulbs are burnt out, then the #552 Flasher Unit in your fuse box is NOT the cause. It's the "Amperage" not being correct to the flasher unit. Place the parking brake on and start your vehicle. Put the left turn signal on and check to see ALL the bulbs are illuminated for the left turn signal. If you find one bulb that is not illuminated, then replace the bulb. It should be an 1157 bulb, but in the front it could be a 1157 Amber bulb dependent on whether your turn signal lens is clear or yellow.

    If you still have difficulty finding the dead bulb, turn on the right turn signal and see which bulbs are illuminated and this will give you an idea as to which bulb on the left side isn't working, or turn on your Emergency Flashers which will turn on both the left and right side lamps and see which bulb is not lit up.

    I hope this Helps,

    ~00 Buck~

    "Still living on the Right Side of Dirt..."

    May 24, 2010 | 1972 Oldsmobile 98

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    Is the blinker and running light bulb an 1157?

    no more like a 3157 check old bulb should have # on it

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    Make sure bulb replaced is the required 2 way or 1 way. If you're sure you put in the right bulb type (1 way or 2 way) 6 or 12 volt.. bulb model marked on side for replacement (Check carefully). Assuming its the right bulb type and still blinks fast, you will have to replace the socket. Sockets do get corroded and worn. Disconnect the battery, cut positive then cut negative. Wire up new socket same way using wire connectors. Tape up connections after.
    Should then work.
    Make sure before you do this you have the right bulbs in all sockets (front and rear) and that all lights work 1st. One failing light front rear same side can cause this problem.
    Go to a scapper to get a socket.. just cut it off a wreck... take a couple of them. There cheap.
    Good luck

    Mar 24, 2009 | 2003 Pontiac Montana

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    Blinker out on '05 CTS

    If you are referring to the maker light on the fender you must remove the plastic wheel well liner panel section. from=nt of wheel well to access the light.

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