- 2010 GMC Sierra 2500HD VIN 1GT4K0BG3AF154643 - New GMC for sale from O Connor Motors by EveryCarListed.com This 2010 GMC Sierra 2500HD SLE 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 3228 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, Privacy Glass and more. We would love to talk to you more about this Sierra 2500HD. Please contact us for more information.