Not sure which 1999 GMC Sierra Rubber Bed Liners are right for you? We have over 1678 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I use the Dee Zee Heavyweight Truck Bed Mat to cover my 5th wheel hitch bed rails. I had to cut my black plastic bed liner to accommodate the rails so the mat gives a pleasant uniform look. A bonus is that cargo does not slide in transit on the rubber surface." —Dennis C from Holbrook, MA bought a Dee Zee Heavyweight Truck Bed Mat for a 1999 GMC Sierra.