If you look around under the hood you will find a sticker somewhere that will show you were they go.
Show diagram for Chevy 305 engine
The vacuum line diagram for a 1997 Chevy Venture 3.4 engine outline where each line goes and what it connects to. It can be found within the service manual.
Wiring? Vacuum? BClear.
Johnsautoparts.com
You can find a 1986 Winnebago, with the Chevrolet 454 cubic engine, vacuum routing diagram at most Chevrolet dealerships. The vacuum routing diagram can also be found in most Chevrolet engine service manuals.
can I get a diagram to replace vacuum hoses ona 986 chevy astro van
here is a diagram
If you look under the hood you will see a sticker with all the vacuum lines on it.
Auto Zone, Chilton shop maual.
http://www.customefis.com/emissions.html
how do you hook up vacuum lines in a 1988 Chevy nova
Try Your Local Automotive Store or Buy A Book On That Vehicle And The Diagram Should Be In The Book < $14.00 -- $20.00 But Make Sure Be You Purchase It.