5.3 Liter Flex Fuel V8, Four Wheel Drive, Front Bucket Seats, Heavy Duty Trailering Package, Power Pack Plus Package, and SLE Package. Crew Cab! Confused about which vehicle to buy? Well look no further than this great-looking 2009 GMC Sierra 1500. Designated by Consumer Guide as a 2009 Recommended Large Pickup. This Sierra SLE offers segment-leading fuel economy thanks to the Active Fuel Management-equipped 5.3L V8 engine that cuts the operation of four cylinders when they are unneeded. The best deals anywhere are at Korf Continental!