Autozone.com has lots of repair info, including vacuum diagrams. They are listed under emissions and drivability in their online repair guide. They also have a parts description and location guide.
you should be able to find one in a chiltons or haynes manual!
What do you want a diagram of?
I need a vacuum diagram for a 1987 suzu pickup 2.5 lt engine
where can i find a vaccum diagram for a 1985 Chevy truck with a 350 small block
Vacuum hose diagram for 1959 chevy truck, wiper motor?
You can find a vacuum diagram for your 1992 Chevy Lumina at most Chevrolet dealerships. Chevrolet service manuals will have the vacuum diagram and can be found at most local libraries.
A person can find a vacuum diagram for this car in the maintenance manual. They can also ask for a print out of the diagram at an auto part store.
You can find the 1986 Chevrolet vacuum line diagram at most Chevrolet dealerships. The vacuum line diagram can also be found at most auto-parts stores.
A diagram of the vacuum lines on a 2006 Chevy Silverado can be find in the service manual. It outlines their location and specific function within the vehicle.
When replacing or making changes to the vacuum line of a car, it comes in handy to have a diagram. A diagram for this cars vacuum line can be found in the maintenance manual.
Wiring? Vacuum? BClear.