How do I use this tuner???

[HOT03Z71]

I recently sold my 2006 Pontiac GTO stock exhaust on Craigslist... well the guy that bought it was cool as hell, and when we discussed where to meet, I mentioned to look for a newer Chevy Z71... long story short, when he heard I had a Z71, he brought me a 'Predator Diablo Sport GM Performance 2003' tuner that he had for his previous vehicle, a 2003 Tahoe! Awesome gesture from the guy, and I want to use it, but I've never used one before! I don't wanna screw my truck up by doing something wrong. There is no owners manual with it. Do I just plug it in, turn the truck on, and pick from prompts like 1)Performance 2) Fuel savings 3)Shift ??? Any info will be greatly appreciated!

[robul]

i have a gto too!! tt 04 ls1! Af for the tuner I would check the website and look for a users manual.. cant help you much on that since I only tune with HPT but it should be pretty easy with a handheld..

[srlbotanical]

The tuners I have worked with will only read to one vehicle. Once they read a vin code they have to be unlocked to use on a different vehicle. I don't know if this is the case for yours or not.