Results 1 to 6 of 6

Thread: HELP!!! My brake lights won't shut off!!!!

  1. #1
    Join Date
    Apr 2002
    Location
    San Diego, CA
    Posts
    73

    Post

    So I go and pick up my trailer after getting some repairs done to it. Hook her up and tow her home, in the rain (fun ), no problem. Unhook the 5'er and back the truck into the driveway. Get out to go in the house and see that ALL my brake lights are still on . I'm not in the truck, the pedal is not stuck down. What the ..... So help me out here. I tried to find the break light switch on the pedal. Unplugged what I found (White connector with black plug plugged into it attached to the pedal)and nothing happened???? So I end up pulling the fuse under the hood and it turns off the rear lights but not the third light??? So here I sit, with the third light still glowing, wondering what the deal is. Anyone have this problem before? What do I need to look for? What can I do? HELP!!!!

  2. #2
    Join Date
    May 2002
    Location
    Charleston, S.C. 29412
    Posts
    998

    Post

    Brake controller stuck or shorted??

  3. #3
    Join Date
    Apr 2002
    Location
    San Diego, CA
    Posts
    73

    Post

    FirstDiesel got it....
    Went out and unplugged the controller and all is good now. Sounds like I get to stop by the RV shop on the way home tomorrow and have them swap that out.

    Thanks for the quick reply....
    I owe you are beer.

  4. #4
    Join Date
    Aug 2001
    Location
    Santee, CA
    Posts
    1,581

    Talking

    Ooooohhhhh,

    I see how you are!! We go out to the desert and eat dust together.

    I give ya my cell phone #, and you don't bother to call me with an electrical question.... uh huh.

    I sure coulda used a beer, too....

    Glad you got it figgered out! I honestly would have gone the same route - 1st checked the brake light sw and 2nd suspected the controller.

    Now we need this rain to let up before this weekend.

    Regards, Steve

  5. #5
    Join Date
    Oct 2001
    Location
    - U.S.A.
    Posts
    327

    Exclamation

    Trailer Controller
    Information
    The following vehicles are affected:
    2002-2003
    - Cadillac Escalade, Escalade EXT
    - Chevrolet Avalanche
    1999-2003
    Chevrolet Silverado
    GMC Sierra
    2000-03
    Chevrolet Suburban, Tahoe
    GMC Yukon Yukon XL
    2003
    - Hummer H2
    Some customers may comment that
    when the headlamps or park lamps are
    on, the brakes on the trailer are always
    applied, or that the back lighting for the
    trailer brake controller illuminates only
    when the brakes are applied.
    This condition may be due to wiring
    changes within the vehicle electrical sys-tem
    for the 2003 model year.
    Inspect the brake controller wiring har-ness
    jumper that is plugged into the vehi-cle
    relay block body. The relay block body
    is located under the left side of the
    instrument panel near the left kick panel,
    behind a plastic cover.
    The 1999 through early 2003 wiring
    harness jumper that plugs into the relay
    block will have a reddish/brown 6-way
    connector and a tag with the last four
    digits of the wiring harness part number.
    Second design 2003 may have a white
    plastic connector with part number 5418
    as well.
    - The 1999 jumper is/was
    PN 12171982 with a pink/purple tag
    identifier of 1982. This number has
    been superseded to 15366255, with
    a pink/purple tag identifier of 6255.
    - The 2000 jumper harness is
    PN 15366255. The pink/purple tag
    identifier is 6255.
    - the 2001-02 jumper is PN 15086884.
    The orange tag identifier is 6884.
    - The 2003 jumper
    is PN 15085418.
    The orange tag identifi-er
    is 5418.
    When transferring
    the brake controller
    with the wiring jumper
    attached from a 2001-
    02 vehicle to a 2003
    vehicle, a change to the
    jumper harness con-nector
    must be per-formed.
    To modify a 12171982,
    15366255 or 15086884
    harness for use in a
    2003 vehicle, switch the
    wires in cavities A and
    D.
    To modify a 15085418
    harness for use in a
    1999-2002 vehicle,
    switch the wires in cavi-ties
    A and D.
    - Thanks to Jim Maddy
    PIN WIRE COLOR CIRCUIT
    NUMBER
    FUNCTION
    A Brown 2409 Brake Controller
    Illumination
    B Red 242 Brake Controller
    12 Volt Source
    C DK blue 47 Brake Controller
    Output
    (Trailer Brakes)
    D Lt blue 1620 Stop lamps
    E -- -- --
    F Black 1850 Ground
    PIN WIRE COLOR CIRCUIT
    NUMBER
    FUNCTION
    A Lt blue 1620 Stop lamps
    B Red 142 Brake Controller
    12 Volt Source
    C Dk blue 47 Brake Controller
    Output
    (Trailer Brakes)
    D Brown 2409 Brake Controller
    Illumination
    E - - -- --
    F Black 1850 Ground
    1999-2002 Wiring Harnesses
    2003 Wiring Harness

  6. #6
    Join Date
    Feb 2002
    Location
    Sheldonville, Mass.
    Posts
    22

    Post

    Mic - Is that a TSB?

    I just went out to my '02 DuraMax 2500HD CC and the tail lights are stuck on. I unplugged the controller for my trailer and no change. The right blinker will knock out the cyclops and tail running lights, but then the right directional is stuck on and not blinking. The left directional works normally and has no effect on the lights.

    The lights and cyclops are now stuck on. I pulled the fuses marked brakes and that had no effect. I am at my wits end!!! Any idea what this is?
    you can email me at Rob@oldGMCtrucks.com
    <a href=\"http://www.oldGMCtrucks.com\" target=\"_blank\">http://www.oldGMCtrucks.com</a>

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •