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Thread: Brake light trouble

  1. #1
    kyarbough is offline Cadillac Owners Member
    Automobile(s): Cadillac
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    Exclamation Brake light trouble

    I have a 2005 CTS and both the left & right brake lights do not work. The center/trunk lid light works though. I have replaced the bulbs and the parking lamps work fine. All fuses appear to be ok...what else could be the problem?

    Kevin


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  3. #2
    Sammy Z's Avatar
    Sammy Z is offline Cadillac Owners Connoisseur
    Automobile(s): CTS 03
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    Re: Brake light trouble

    Do you have the correct bulbs it there? Try turn them around

  4. #3
    kyarbough is offline Cadillac Owners Member
    Automobile(s): Cadillac
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    Re: Brake light trouble

    There is no power on the white wires entering the light sockets. They worked when I purchased the car and I have never replaced them.

  5. #4
    kyarbough is offline Cadillac Owners Member
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    Re: Brake light trouble

    I can't figure out why the 2 rear side brake lights don't work. All fuses are good and the bulbs have been replaced. Anyone have any ideas? How do I check the switch and where is it located?

  6. #5
    TotalEclipse31's Avatar
    TotalEclipse31 is offline Cadillac Owners Fanatic
    Automobile(s): 2005 Cadillac CTS VTXi
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    Re: Brake light trouble

    I had this same issue. I went to dealer under warranty and what happened was the light housing actually leaked moisture and the harness got burnt up. They had to replace some harness and the light housing.

  7. #6
    Sammy Z's Avatar
    Sammy Z is offline Cadillac Owners Connoisseur
    Automobile(s): CTS 03
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    Re: Brake light trouble

    I think that if the center light is working, the switch is working.

  8. #7
    ghettomike's Avatar
    ghettomike is offline Cadillac Owners Master
    Automobile(s): 03 CTS 3.2L (Sold) / 09 CBR 600rr /2014 GMC Sierra
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    Re: Brake light trouble

    you may need to use a volt meter and check to see if any power is getting to the wires at all by the outlet, wedge something on the brake peddle so the light SHOULD be on


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