well i know for a fact it works in other years because i stuck it in my cousins 97 and it worked and the manual says up to 2000 as long as it is vortec i even stuck it in wifes cousins 98 w/ 454 and it worked.i just checked to see if it would work on my 99 and Hypertech only lists that part # for 1996 models, 1997 are different, 98, 99, are all different
it is plug and play. just plug it in answer some questions and let it do it's thing. It was in my tahoe and i could tell a big differenceHow difficult was it to install? If it's that much of a difference, I might wanna look into doing the same thing. If it's a 150 dollar investment and makes that much better power and improved fuel economy it will definitey be worth it.
Abot how much of an increase have you seen since you've installed it? Or have you been gunning it since you've notice the huge power gains?...lol
i know you have a van while I have a truck to I'm assuming it should be a little easier to install.