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Possibly located on sticker under hood, if not then service manual.
I am having the same problem, my issue is a broken vacuum line from the pasenger side of the van to the engine. I am trying to find a diagram so that I can fix it.
can I get a diagram to replace vacuum hoses ona 986 chevy astro van
You can find a complete vacuum hose diagram for your 1994 GMC Safari van in a Chilton or Haynes automobile repair manual. These manuals can be found at most local libraries or purchased at automobile parts stores. These companies also have online resources available for certain make and model vehicles.
vacuum diagram "R" us !
can I buypass the rear heater valve and run two heater 1986 gmc van
Look on the underhood sticker.
You can find a free 2003 Chevrolet Express Van V-6 vacuum diagram at most Chevrolet dealerships. You can also find the diagram at most libraries.
vacume line to the valve has broke off from manifold vac that goes to the switch
The vacuum switches for the AC vents on a 1995 GMC Safari all-wheel drive van are located underneath the dashboard. The vacuum lines are also located underneath the dashboard.
try www.autozone.com
A vacuum hose routing diagram for a 1988 E 150 van can be found in the vans service manual. The manual can be bought at most auto parts.