hello, i'm Francis and i live in Belgium
i bag your pardon if i don't speak US well ! i find a schematic diagram of vacuum system to my BLAZER 88-2.8lv6-fuel injection
i chould be so glad if someone have it !!! you can send me to my mailadress ' raymond.boulogne@skynet.be'

Thanks, thanks, thanks

 

Try www.autozone.com and sign up for their garage and then in the repair diagrams, you should be able to find it.