Hey guys, I'm thinking about buying a 23ft toyhauler and was wondering If my truck can tow it. I have a 2015 Gmc sierra 5.3 crew cab, 6.5ft bed, added supersprings on back, 12000lb rated tow hitch, and truck has trailer brake controller. I'm planning on putting a 4 seater rzr in the back so total weight should be about 7000lb. Any help would be great. Thanks