2500HD What is this? What goes here

[falcom]

I want to install a 12 volt outlet on the bed of my 2022 2500HD Silverado. Before I pry it of, what goes in this oval shaped plastic thingy by the tailgate?

 

[Cheekster96]

I believe that is for the wiring that goes to the gooseneck/5th wheel connection.  On the other side of the bed, if you have a cover on there, that is where the 110v outlet would be.  

[Paul Wojcicki]

anyonr know where we can get the plug for the bed as it would be easier than running my gooseneck cord over the tailgate

 

[Another JR]

Curt makes wire bundles with connectors compatible with GM connectors. You end up buying a 7 or 10 foot wire harness with connectors, and don’t use the panel mount trailer connector that comes with it. You separately buy the oval panel mount connector, and the Curt harness plugs into the back of it. The other end of the harness had male and female connectors wired in parallel and those connectors insert between the bumper connector and its harness. 
 

7 foot harness Curt 56070

 

Panel mount oval connector Hopkins 40974

[Lizard Power]

That is for the 5th wheel plug.  I ordered this item from Curt  Item #56072.  https://www.curtmfg.com/part/56072  My 110v outlet is on the passenger side same area.