All right. Today on this 2011 GMC Sierra Crew Cab, we're going to install and review part number HL61521. This is the Husky Liners classic custom auto floor liner in black. All right. To start off, we'll go ahead and get the rear seats out of our way. Then you want to go ahead and remove any preexisting floor mats or liners. This liner is designed to work exclusively with the carpet alone, with… see more >