after contacting them over and over, and was told in email and live person that their rear mat will not work in 15 1500 WITH the underseat tray. I refused to accept that answer from them. on the last conversation with someone there, I asked, why wont it work. her response was " we don't even try to make mats that has dealer options installed " I told her, it IS a dealer option, but I purchased the tray from amazon and installed it myself.


so heres my explanation of how to install the rear underseat cargo tray & weathertech rear liner, since they don't know how to do it and it just BLOWS THEIR MIND THAT IT WORKS.


** sorry for lack of detail pics, after the install was when I thought, hey I should put this on the forum. it really is self explanatory though.


push up the rear seats to expose the rear seat nut, I think it was a 19mm. I removed the nut and placed these brackets on it, then reused the factory nut.




after I rolled me weathertech mat out, I tucked the end under the seat under the brackets, I guess you could install the brackets after you put the mat down.



final step, put the cargo tray ontop of the brackets, line up the holes, use screws supplied with tray to attach to brackets, and that's it.