Not sure about the newer models, but I have replaced cushions and upholstery covers on the driver's seat of a buddy's 08 1500. It wasn't hard. Make sure you raise the seat to the highest position first to access the bolts, because you will have to remove the seat. This will make the replacement easier as well. Do not disconnect the seats with the ignition switch on. Before disconnecting the seat harness, remove the key (or disconnect the battery) or you'll get airbag codes pop up. The covers should just slip on and off the cushion after unhooking them from the seat. I've done mid 2000's model BMW's as well the same way. You can do them yourself, but if you feel uncomfortable about it, I'm sure an upholstery shop can do it for little money. Hope that helps.
