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  1. #1

    Default oem 5th wheel / gooseneck wiring

    did you know that some 08 and up silverados / sierras have oem 5th wheel / gooseneck wiring? its up under the bed near the fuel tank inlet. i think its only on the vehicles with the complete tow package hitch, tow mirrors, brake controller. just some food for thought. no more butchering the oem harness to get a 7 way in the bed.

  2. #2

    Default

    That's handy information. I think I've read before that it's tucked up either over the fuel tank as you mentioned or over the spare tire.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



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  3. #3

    Default 5th wheel harness

    Quote Originally Posted by 03 SIERRA View Post
    did you know that some 08 and up silverados / sierras have oem 5th wheel / gooseneck wiring? its up under the bed near the fuel tank inlet. i think its only on the vehicles with the complete tow package hitch, tow mirrors, brake controller. just some food for thought. no more butchering the oem harness to get a 7 way in the bed.
    I looked for the harness under my 2004 HD and couldn't find it. I was told that if the trailer plug was already at the rear bumper there was not another harness tap under the truck. Anyone else know about this?

  4. #4

    Default

    im not sure it that came on those trucks. your best bet is to start at the plug and follow the harness back. if you cant find it and you want a low intrusive wiring approch use this, its all plug and play.
    http://www.etrailer.com/Custom-Fit-V...893-11932.html

  5. #5

    Default

    Thanks for the advice. I was looking for an aftermarket harness of some sort. This seems to be just what I need. I have moved the factory plug into the bed for my 5th wheel but i still need a plug outside for a boat trailer. I thought there was something out there but couldn't find it.

  6. #6
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    Default

    Quote Originally Posted by 03 SIERRA View Post
    did you know that some 08 and up silverados / sierras have oem 5th wheel / gooseneck wiring? its up under the bed near the fuel tank inlet. i think its only on the vehicles with the complete tow package hitch, tow mirrors, brake controller. just some food for thought. no more butchering the oem harness to get a 7 way in the bed.

    You will have an extra option on the window sticker for camper/5th wheel wiring @ $25...it isn't part of the basic towing package.

  7. #7

    Default

    Quote Originally Posted by steved View Post
    You will have an extra option on the window sticker for camper/5th wheel wiring @ $25...it isn't part of the basic towing package.
    yeah thats right. there is probably a code in the glove box. i do not know what the code is though.

  8. #8

    Default

    i have confirmed 99-07 trucks do have this option.
    this applies to all 3/4 ton and up trucks 99-current if you look under the back of the truck, follow the wiring from the back of the 7 way if it does not come directly from the wiring harness on the frame you will notice an identical plug like on the back of the 7 way. it will tee off and run to the front of the gas tank clipped to the bed mount bracket on the frame.

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