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Thread: no brake lights yet 3rd brake light works?

  1. #1
    Join Date
    Sep 2008
    Location
    Hope Mills, NC
    Posts
    676

    no brake lights yet 3rd brake light works?

    everything in the talights works except the brake lights. i have traced power to this block mounted under the truck where it plugs into. the truck is a 2004.
    2005 GMC RST *sold
    2006 Silverado SS with nawz

  2. #2
    Join Date
    Mar 2006
    Location
    Phoenix, AZ
    Posts
    620
    Loose connector? Bad ground? Burnt bulbs?


    2006 GTO M6 Brazen Orange
    2006 Silverado CCSB Duramax


  3. #3
    Join Date
    Sep 2008
    Location
    Hope Mills, NC
    Posts
    676
    its definetly in the plate. i have power into the plate but not comming out of it. why would gm put this dumb plate in anyway? does anyone kno what this plate is called so i can get a new one. i kno its the plate cus i ran a hotwire from the harness going into it to the one tailight and i had power at the light. what is this anemic peice called?
    2005 GMC RST *sold
    2006 Silverado SS with nawz

  4. #4
    Join Date
    Sep 2008
    Location
    Hope Mills, NC
    Posts
    676
    haha ohh yea i forgot i have a buddy who works at a chevy dealership as well. thanks for the idea. i might have to give him a call.
    2005 GMC RST *sold
    2006 Silverado SS with nawz

  5. #5
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    I don't even know what you're calling the plate? Where is said plate?

  6. #6
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Talking about the junction box that is bolted to the frame at the back, where all the rear lights plug in?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  7. #7
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    OIC. I have seen problems with corrosion inside the rear lamp junction block. I've also seen opens in them. Most commonly I see problems with the tail lamp jumper harness from the junction block to the sockets. Also....the 3rd brake light is on a completely different circuit than the other two. It has it's own fuse, etc.

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