GM integrated trailer brake controller problem

Discussion in 'Tow Rigs and Trailers' started by Paul, Sep 13, 2017.

  1. Paul

    Paul Dr 'Dre Moderator

    Joined:
    Feb 10, 2008
    Location:
    Kings Mountain
    The facts. My dic started showing "service trailer brake system" a couple of weeks ago and it will lose trailer brakes at the same time. Key off and then back will clear it for awhile but it always comes back. Scanned it and have replaced the brake light switch and harness, controller relay and m/c pressure switch. Still not fixed. All signs point to the controller module being bad. Big money part plus GM has to program it. Fuck that. How hard would it be to bypass that shit and hook up a Prodigy?

    I'm leaving for Sparta next week and this damn thing is driving me crazy.
    Specs,
    2008 Chevrolet Silverado 3500 c/c dually, 4x4 Dmax, just turned 100k miles.
    TIA!
    Paul...
     
    Last edited: Sep 13, 2017
  2. rodney eppes

    rodney eppes Well-Known Member

    Joined:
    Feb 3, 2010
    Location:
    Mt.Holly NC 28120
    I don't know wiring, but seems as long as you run you Own wire harness, the computer wouldn't know the difference.
     
    a_kelley likes this.
  3. Jason W.

    Jason W. Carolina Trail Blazers

    Joined:
    Feb 27, 2009
    Location:
    nebo nc
    My chevy did that once, ended up being a loose conection a plug on bumper. Cleaned my conection, smeared in some dialetric grease and was fixed.
     
    Jody Treadway and a_kelley like this.
  4. LBarr2002

    LBarr2002 Well-Known Member

    Joined:
    Nov 16, 2009
    Location:
    SC
    Have you towed a different trailer to make sure the problem is not in the trailer wiring? My truck went nuts towing my brothers trailer because of a bad ground.
     
  5. Paul

    Paul Dr 'Dre Moderator

    Joined:
    Feb 10, 2008
    Location:
    Kings Mountain
    Forgot to mention that it does this without a trailer hooked up also.
     
  6. Jody Treadway

    Jody Treadway Croc wearing fool Moderator

    Joined:
    Mar 20, 2005
    Location:
    Hendersonville, NC
    Seems overly sensitive or complicated @Paul
    If it were me and I lost confidence in the OEM controller, I'd be soldering in 4 wires from an old school controller and lettin it eat.
     
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  7. Paul

    Paul Dr 'Dre Moderator

    Joined:
    Feb 10, 2008
    Location:
    Kings Mountain
    Installing a Prodigy in the morning. Soldered electrical connections are overrated.
    Wire nuts and tape are where its at!








    NOT...
    LOL!
     
  8. Tim C

    Tim C Wizard

    Joined:
    Jan 22, 2007
    Location:
    Fayetteville
    I hate wire nuts. Just twist the wires together and cover them in duct tape

    Sent from my HTC6545LVW using Tapatalk
     
    Paul, jeepinmatt and rodney eppes like this.
  9. Infamous1

    Infamous1 Well-Known Member

    Joined:
    Aug 14, 2010
    Location:
    Pittsboro
    Man you guys are living in yesterday with the wire nuts and duck tape.
    They have these connectors now called
    "Scotch or Screwyou loc" man those things are the best. All the hacks are using them. Tech tip, install them where they can't be seen but still attract moisture, that make it fun for the next guy!

    Good luck on the repair @Paul brake problems suck when towing to and from where we choose to play.
     
  10. mcutler

    mcutler Well-Known Member

    Joined:
    Apr 17, 2010
    Location:
    mt.airy nc
    It's usually the big cannon connection behind the rear bumper or the back of the receptacle; corrosion...

    Never been a fan of the factory controllers, always too slow to ramp up. Not enough gain adjustment. Go prodigy brother

    Sent from my SM-G950U using Tapatalk
     
  11. Paul

    Paul Dr 'Dre Moderator

    Joined:
    Feb 10, 2008
    Location:
    Kings Mountain
    Stand alone brake controller installed and functioning correctly. Do you approve?
     

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