- Used 2009 GMC Sierra 2500HD VIN 1GTHK44K79F144171 from O Connor Motors by EveryCarListed.com This 2009 GMC Sierra 2500HD WT that we just got into, O Connor Motors is a must see. This Sierra 2500HD has a 6.0 liter 8 cylinder 16 valve engine and a 6-Speed Automatic that are ready to haul up to 3644 pounds. It comes with an AMFM Stereo, CD Player, Satellite Radio, and gives you peace of mind with its safety features, including 4-Wheel ABS and more. We would love to talk to you more about this Sierra 2500HD. Please contact us for more information.