Join Date: Aug 1998
Location: Waldorf Md. USA
Most of the newer books do not have vacuum diagrams because they can actually vary from car to car. The underhood sticker is the only correct diagram for each car, but unfortunately, they are usually pretty hard to read after 15 years. This leaves you with the option of going to the dealer and see if they can order one for you, they will use the VIN to get the correct one. Or find a shop that has a copy of Mitchell on demand or another electronic service and see it they can print one for you.
Hope this helps,
Advanced Automotive Machine
1971 Chevelle "Heavy Chevy" original owner
1973 Z-28 ..one family car...Brother bought it new in 73