I just changed my 2010 Tahoe oil at the dealer, just over 3,000 miles. They use conventional oil so will keep the interval there. If I go synthetic once I'm doing the changes I'll run 5,000 miles.
I guess the reading about possible oiling problems related to AFM system failure have me changing oil at short intervals.
By the way, the last place you want to ask for oil change interval or oil type advice is an oil change place. In my experience they have no clue.