I have a diablosport predator model # U7192 handheld programmer. *Just updated with latest revision of software* IT WILL WORK ON 2006 CHEVY/GMC/HUMMER TRUCKS WITH 4.8, 5.3, 6.0 & 8.1L GASOLINE ENGINES ONLY. ***** IT WILL NOT WORK ON ANY OTHER MODELS OR ANY OTHER ENGINES ******* It may work on some classic 2007 models but check the diablosport website for Vin # support. In my opinion, this is the best handheld programmer on the market! Just plug into the truck and within 15 minutes, you will be able to see noticeably more HP, torque and mpg. It has 3 tunes that are available to suit your needs. Any one makes a noticeable difference over stock. Checkout DiabloSport Official Website for more info. I will guide you thru the first setup and get you started. Very user friendly. $175 CASH ONLY OR MAKE REASONABLE OFFER. Not interested in anything on trade. This programmer sells for $339 new. Email if interested. NO SCAMMERS!