Any ideas on what this piece of plastic might be? I found it in the back seat of my new truck.

 

Hopefully extra.

Used to hold a wire loom in place, probably behind the seat.

The X? Got me.

 

I just folded up and down both back seats....didnt see anything that looked like that....unless hidden behind the insulation panel or carpet ...just thought....didnt look under the front seats.....maybe holder clip something there...

 

Yep, I think AHNC got this one. The arced section is taped to the harness, the "barb" is pushed over an adjoining harness or tube.

Probably an extra one stuck to the harness when it was installed. Very unlikely to come off, once it's taped on.

 

My truck had similar clips in the tailgate when I got it. I assumed they were to align the panel without bumping paint together.

They were a little different but pretty similar.

 

Looks like a clip which is usually taped to a harness.

 

Safe to toss it or should I try to figure out where it goes under the driver or passenger seat? I'm guessing it is from under one of those seats, probably driver.

 

Toss it, and don't give it another thought....

 

Never toss anything.

It belongs in the "Never toss anything box."

Never fails that you'll need it or wish you had it if you toss it.

 

Pretty sure that secures the transmission.