hypertech tuner

will a hypertech tuner for a 96 blazer work on a 96 bravada also i have a vac leak some where my bravada idles high whene cold like 1200 i replaced all the vac hoses i could find is ther a hose hidden some where that would do this i can here the leak just cant find it

I am not sure if the computers in both trucks are the same or not. I know alot of parts are interchangeable but not sure on electronics. sorry, but I am sure someone on here can help you though.