Join Date: May 2006
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It sounds like you have a hesitation. A hesitation can be caused by alot of things, like your oil. When was the last time you changed your oil? Your fuel filters. When was the last time you changed your fuel filters? A hesitation can also be caused by your turbo veins sticking, your hpop going back or you could have one or two injectors going bad. Go back to stock and drive the truck around for a while before you go to the dealership so it will register a code.
As far as detecting whether a programmer was on the truck, the only code they will see is the keep alive memory code. If you're questioned about it, your friend told you if you disconnect the batteries it would reset the computer and maybe take care of the problem.
When you get a chance PM me what you were running before you got tunes from us last month and how many miles on your truck. Let us know how it goes at the dealership. Remember, if you get reflashed, you need unlock your box before loading tunes.