Not a factory tune yet. Would really love to find one to compare it to the truck version. Shouldn't be that different but I feel some slight surging at mid throttle with the truck tune. Also a little soggy when pressed hard. Light throttle feels pretty good except under heavy load.
The tune that I had attached to post #10, was a stock 2007 Suburban L76 calibration - modified for your vehicle (which was originally equipped with a 5.3L Flex Fuel engine).