2006 Chevy Suburban
VIN # 1GNEC16Z16J147334
VIN Engine ID = Z Flex Fuel
Be aware that 06 Flex Fuel is Virtual Flex meaning there is no physical sensor on the vehicle.
VATS is still enabled in that bin and is set to PWM so if you paid someone to disable it you got screwed.

What I use to edit bins is HP Tuners and Tunercat OBD2, both commercial products.