License Plate and Reverse Light replacement
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, License Plate and Reverse Light replacement in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I did this on my 2005 CTS I didn't realize how much of a pain it would be to replace ...
  1. #1
    drolfo is offline Cadillac Owners Member
    Automobile(s): 2005 CTS 3.6
    Join Date
    Nov 2011
    Posts
    2

    License Plate and Reverse Light replacement

    I did this on my 2005 CTS
    I didn't realize how much of a pain it would be to replace my license plate lights until I put hands on and figured it out myself. Here is the step by step for you:

    What you will need:
    -10mm deep socket/ratchet
    (if you don't have the deep socket, which I didn't, a crescent wrench and needle nose pliers will work)
    -Flat head screwdriver (for plastic clips)
    -Sylvania bulb Part Number 2825 (License Plate)
    and/or
    -Sylvania bulb Part Number 3157 (Reverse Lights)

    1. Open trunk and locate 8 plastic clips.
    2. Remove a 8 clips
    3. Remove the 8 nuts from the inside of the trunk
    4. Pop out license plate/reverse light section from the outside of the car
    5. Which ever light you need to change, turn that socket a 1/4 to the left and replace bulb
    6. Repeat step in reverse to put together

    The reverse lights are noted by the blue arrows in my pictures
    Attached Images

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  3. #2
    BenzCTS's Avatar
    BenzCTS is offline Cadillac Owners Fanatic
    Automobile(s): 2003 CTS
    Join Date
    Jun 2008
    Location
    Maryland
    Age
    34
    Posts
    254

    Re: License Plate and Reverse Light replacement

    Very good write up!

  4. #3
    drolfo is offline Cadillac Owners Member
    Automobile(s): 2005 CTS 3.6
    Join Date
    Nov 2011
    Posts
    2

    Re: License Plate and Reverse Light replacement

    thanks

  5. #4
    Argent1's Avatar
    Argent1 is offline Cadillac Owners Connoisseur
    Automobile(s): '07 CTS 3.6
    Join Date
    Nov 2010
    Posts
    2,872

    Re: License Plate and Reverse Light replacement

    Just replaced my LP LED's today. One was flashing.
    It wasn"t too bad this time but if you have a spoiler you have to loosen it to get the panel off, bit of a PITA.
    Plus it was about 0* C.

  6. #5
    TunixComplex is offline Cadillac Owners Enthusiast
    Automobile(s): 2003 CTS 3.2 5M
    Join Date
    Jan 2010
    Location
    Springfeild, MO
    Age
    24
    Posts
    608

    Re: License Plate and Reverse Light replacement

    For some reason my LP LEDS go out once a month so I went back to standard halogen style and havent had a problem. Also there are 4 extra bolts to take off the rear fascia on the 05 verses the 03? Weird.

  7. #6
    Argent1's Avatar
    Argent1 is offline Cadillac Owners Connoisseur
    Automobile(s): '07 CTS 3.6
    Join Date
    Nov 2010
    Posts
    2,872

    Re: License Plate and Reverse Light replacement

    I replaced mine with SMD style as recommended by Superbright.
    I used the WLED-WHP5's. They seem to have a resistor built into them. If they are too bright for my liking I may change them in the spring.
    I like the colour of Cool Blue but these only came in Natural White.

  8. #7
    carrnuttdave is offline Cadillac Owners Connoisseur
    Automobile(s): 2007 CTS
    Join Date
    Aug 2010
    Location
    Layton, Utah
    Age
    50
    Posts
    1,572

    Re: License Plate and Reverse Light replacement

    I just took out the bulbs in my license plate lights and got one of those stick on LED strips that has a row of LEDS. I had to drill a small hole on the under side of where the license plate goes but so far I haven't had any trouble with it. been there over a year


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