- 2010 GMC Sierra 2500HD VIN 1GT5K0BG1AZ240259 - New GMC for sale from O Connor Motors by EveryCarListed.com You must see this 2010 GMC Sierra 2500HD SLE that we just got into, O Connor Motors. 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 3200 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 put you in the driver's seat of this Sierra 2500HD. Please contact us for more information.