I had a 2011 Silverado, 4x4 extended cab, 5.3L. Thought it was a great truck. Would still have it, but traded it in on a 2013 - so many discounts I couldn't afford not to.
It does have the AFM cyl deactivation that so many don't seem to like. After monitoring mine, it seems to be in 8 cyl mode 98% of the time, so...
Is it a 1500, 2500, V8, V6, or what? As far as I am concerned, all are great trucks and one with that # of miles would be a find!