TEXT US - 1(262)671-1022.2013 GMC Sierra 1500 Extended Cab SL4WD 4-Speed Automatic with Overdrive Vortec 4.8L V8 SFI VVT Flex Fuel4-Speed Automatic with Overdrive, 4WD, Cloth.Recent Arrival!Awards:* JD Power Initial Quality StudyReviews:* Smooth, quiet ride; comfortable seats; powerful V8 options. Source: Edmunds* If your towing needs run in the 7,000-10,000 pound range, a compact pickup isn’t going to cut it; the full-size 2013 GMC Sierra, on the other hand, will. Models range from a basic Work Truck to the frugal 23-mpg Sierra Hybrid to the luxurious Denali. Source: KBB.com