Wire harness location

[offduty11]

I just purchased a 2016 Chev. 3500 HD LTZ model with DRW. The truck is equipped with the optional 5th wheel/gooseneck bed wire harness but I can't seem to locate it. Any suggestions.

[creedster]

Don't know about the newer models but mine (2011) was tie-wrapped to the frame on the driver side at about the wheel well.

[jjcook]

On my 2013 GMC the wire bundle is just behind the cab on the drivers side on top of the frame . There is a white sticker like thing that says disconnect the battery before unwrapping. Hope this helps