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Thread: Brake light, tail light, blinker cruise control problem HELP!!!

  1. #1
    Darrel74 is offline Cadillac Owners Member
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    Brake light, tail light, blinker cruise control problem HELP!!!

    *Durring the day with lights turn off.
    * The turn signal turns off the cruise control.
    * The turn signals turn work but when I hit the break they speed up and they turn into hazards in the back
    *At night with lights on.
    * Tail lights are on but dim (Top bulb has both filaments lit up but still dim...weird) when brakes are hit the bottom light turns off, the top light goes from 2 filaments to 1 and remaims dim.
    * Cruise control will not work at all

    * The LEDs on mirrors are slightly illuminated.
    * Blinkers basically don't work at all.


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  3. #2
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    Quote Originally Posted by Darrel74
    *Durring the day with lights turn off.
    * The turn signal turns off the cruise control.
    * The turn signals turn work but when I hit the break they speed up and they turn into hazards in the back
    *At night with lights on.
    * Tail lights are on but dim (Top bulb has both filaments lit up but still dim...weird) when brakes are hit the bottom light turns off, the top light goes from 2 filaments to 1 and remaims dim.
    * Cruise control will not work at all

    * The LEDs on mirrors are slightly illuminated.
    * Blinkers basically don't work at all.
    I have the same exact problem also the reverse sensors lights are red as if I'm reversing on my 02 ext. took it to two different mechanics and they couldn't figure it out I also tried to trace almost every wire to see if anything was damaged or crossed to no avail. Please help can't figure it out.

  4. #3
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners 10000+ Posts
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    Quote Originally Posted by jaypyrnnnm

    I have the same exact problem also the reverse sensors lights are red as if I'm reversing on my 02 ext. took it to two different mechanics and they couldn't figure it out I also tried to trace almost every wire to see if anything was damaged or crossed to no avail. Please help can't figure it out.
    The back up sensors are on a different module which does have a test mode
    Let me know if you need the test method for the park sensors

  5. #4
    Darrel74 is offline Cadillac Owners Member
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    Re: Brake light, tail light, blinker cruise control problem HELP!!!

    Does yours have an after market alarm or auto start?

  6. #5
    Darrel74 is offline Cadillac Owners Member
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    Re: Brake light, tail light, blinker cruise control problem HELP!!!

    Yes, after market auto start.

  7. #6
    TLMC is offline Cadillac Owners Member
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    Re: Brake light, tail light, blinker cruise control problem HELP!!!

    It's a ground issue, check the grounds.

  8. #7
    Skier-24 is offline Cadillac Owners Fanatic
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    Re: Brake light, tail light, blinker cruise control problem HELP!!!

    Quote Originally Posted by TLMC View Post
    It's a ground issue, check the grounds.
    I was thinking the same thing.

  9. #8
    Outlaww01 is offline Cadillac Owners Member
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    Re: Brake light, tail light, blinker cruise control problem HELP!!!

    Where are the grounds

  10. #9
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners 10000+ Posts
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    Quote Originally Posted by Outlaww01
    Where are the grounds
    the ground for the rear lights is on the left rear body mount

    Don't forget to check the junction block under the right rear quarter panel


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