- New 2011 GMC Sierra 1500 VIN 3GTP2VE3XBG122159 from Guess Motors/Guess Ford Mercury by EveryCarListed.com This 2011 GMC Sierra 1500 SLE that we have at, Guess Motors/Guess Ford Mercury is a must see. This Sierra 1500 has a 5.3 liter 8 cylinder 16 valve engine and a 6-Speed Automatic that are ready to haul up to 1671 pounds. It comes with an AM/FM Stereo, CD Player, Keyless Entry, and gives you peace of mind with its safety features, including 4-Wheel ABS, Rear Parking Sensors and more. We would love to put you in the driver's seat of this Sierra 1500. Please contact us for more information.