^no there's 4 total, there's 2 more in the center. They blend in because they are installed in that black plastic on each side of the license plate next to the painted part of the bumper. Go take a look at your truck, or you can barely see them in my rear photo posted above.

 

Lol i just had to go look outside as i couldnt remember seeing them even after seeing the photo's lol. How on earth did i miss those. I have gone over the truck in silly detail when cleaning and never even noticed them lol.