1999 DeVille 3rd Brake Light
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  • 2 Post By CaddieNewbe
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, 1999 DeVille 3rd Brake Light in Past Cadillac Vehicle Discussion; The 3rd brake light has gone out on my wife's 1999 Cadillac DeVille and I want to replace it. I've ...
  1. #1
    CaddieNewbe is offline Cadillac Owners Member
    Automobile(s): 99 Cadillac Deville
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    1999 DeVille 3rd Brake Light

    The 3rd brake light has gone out on my wife's 1999 Cadillac DeVille and I want to replace it. I've removed the trim but don't know what to do next. I can see the two red plastic clips that hold the brake housing in place, but pushing them out of the way will not allow me to get to the light. I also see the two wire harnesses going into the rear deck, but I didn't want to pull hard on them unless that is the only way to get at the light bulb. A photo is attached.
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  3. #2
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
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    Re: 1999 DeVille 3rd Brake Light

    ------------------------------
    page 6-39 in your Owners Manual has instructions -

    there are illustrations - but I can't copy them here -
    -------------------------------------
    there appears to be a trim plate on the rear deck -

    1. Lift the trim cover to remove.


    2. Twist the socket counterclockwise and remove the
    socket and bulb from the housing.


    3. Replace the bulb.
    Reverse the steps to reassemble the stoplamp assembly.

  4. #3
    CaddieNewbe is offline Cadillac Owners Member
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    Re: 1999 DeVille 3rd Brake Light

    Thanks, basscatt, I never would have thought to look in the owner's manual, but I guess that is the difference with the Cadillac models. Already replaced the bulb, it was so simple. Thanks again.
    basscatt and basscatt like this.

  5. #4
    brougham is offline Cadillac Owners Master
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    Re: 1999 DeVille 3rd Brake Light

    Most owners manuals say now to replace bulbs. It looks like you were going at it from the bottom in that picture weren't you?

  6. #5
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    All owners manuals have bulb replacement instructions.

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