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hd trailer package problem

Discussion in 'Towing & Trailer Tech' started by drwdominance, Jun 12, 2010.

  1. drwdominance

    drwdominance Rockstar

    Ok, 07 sierra classic which i have had for about 8 months which has the trailer package. bought a 17ft expandable travel trailer. the electronic brake control light is always on even without the trailer hooked up. so there is a problem with either the brake control unit or the trailer package.
    my question is how hard is it to diagnose the problem and what should i use to diagnose the problem?

    any insight?
     
  2. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    Disconnect the harness to the trailer plug and see if it goes out. What kind of controller is it?
     
  3. drwdominance

    drwdominance Rockstar

    i will try that. it's a tekonsha voyager.
     
  4. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    If the light is on, there is a load on the controller. Could be corrosion in the trailer plug, or a bent pin.

    I hated my Voyager. Seemed like it was on or off.
     
  5. drwdominance

    drwdominance Rockstar

    so the way it is right now is that with no trailer hooked up the green light is on but when i touch the brake pedal the light goes out. it almost seems completely backwards.
     

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