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ashnic's avatar
ashnic
Explorer
Jun 26, 2013

Prodigy not working correctly

I have a 04 Silverado which I recently purchased. The gentleman I purchased it off of had installed a drawtite brake controller and said he pulled a small camper with it.. It seemed to work correctly so I assumed it should be a simple conversion over to my Prodigy 2 which I had in my other 03 Silverado (03). I unplugged the controller and plugged in the Prodigy 2 using the pigtail from my 03. Nothing no lights nothing..so I compare the 2 plugs that goes into the underdash power supply. Pins red/white and blue are all in the same location but the black is on the other side of the plug. So I pull the blue wire retainer on top of the plug pull the black wire and move over to the left, reinstall the wire retainer and plug and and sure enough I have power and everything seems to be working..but I don't think it is...for instance, when I pull the key the Prodigy shuts completly off, it never did that before, it would stay on for about 15 mins or so. Also if I have my foot on the brake when I start it P.L. is displayed, never has done that before..

Anyone know where to start
  • ashnic's avatar
    ashnic
    Explorer
    Jun 26, 2013
    Yea..I checked on Etrailer and it shows the same connector for both..However they did change between 02 and 03 model also on Tekonsha site it shows the same wiring 3015-P for 03-06 and a 3015P is what I have.
  • Helmsey's avatar
    Helmsey
    Explorer
    Jun 26, 2013
    closurdo wrote:
    I think between 03 and 04 GM switched the wiring on the harness for the trailer brake controllers, meaning which wire went to what on the controller.


    For the 2500HD truck I know that is the case, not sure about the 1500 series. Something else you might check...
  • closurdo's avatar
    closurdo
    Explorer
    Jun 26, 2013
    I think between 03 and 04 GM switched the wiring on the harness for the trailer brake controllers, meaning which wire went to what on the controller.
  • ashnic's avatar
    ashnic
    Explorer
    Jun 26, 2013
    I hear what you are saying..I believe they have something under the hood connected wrong. I don't believe (be the first one I have seen) it came with a tow package. It's a 04 4x4 5.3L EC LS. However it does have the trans cooler. The previous owner purchased new and he put a hitch and electric brakes on it. Since all of my lights work, brakes react when stepping on pedal I am curious if I would be alright to just run a lead from positive side of battery to black lead?
  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    Jun 26, 2013
    It is hooked to a switched power feed- not really ideal. The p.l. is power loss, meaning the power was interrupted while braking (though in your case the power was restored while braking).
  • ashnic's avatar
    ashnic
    Explorer
    Jun 26, 2013
    Yea I was thinking of doing that..but I will say..I hooked up the camper and everything seemed to work properly..
  • Campfire_Time's avatar
    Campfire_Time
    Explorer
    Jun 26, 2013
    Double check and make sure the pigtail called for is the same. In theory they are because its only one model year difference, but manufacturers are notorious for making changes even in mid model year without warning.

    But it really sounds to me like someone did some rewiring. Get a cheap 12 volt tester, the kind with a bulb in it. Test each connection at the 7 pin connector by having someone sit in the driver's seat and go through each light, brakes, signals, etc. That will tell you a lot and give you an idea on what to do.

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