right in the owners manual, or inside of the fuse box door.
Go to your local auto parts store & ask them for a chiltons or haynes manual on your vehicle.
try www.autozone.com
You may be able to find the diagram on the Chevy site. You can also find diagrams in the back of the Haynes Repair Manual.
You can find a 1995 Chevrolet Astro Van fuse box diagram in the back of the owners manual. You can also find the fuse box diagram on the inside cover of the fuse box.
You can find a 1989 Chevy front axle diagram at most Chevrolet dealerships. Most local libraries will have Chevrolet service manuals with the front axle diagram.
Engine diagrams can be used as guides when it comes times to making necessary changes. An engine diagram to a 1999 Chevy Astro Van can be found in its maintenance and repair manuals.
You can find a wiring diagram for your 1994 Chevrolet Astro Van stereo at most Chevrolet dealerships. The stereo wiring diagram can also be found at your local library.
you might try www.haynes.com
On some cars there is a sticker in the engine compartment with a belt diagram.
A complete diagram is available at MOTORLIT.COM.
All of the different wiring diagrams are in the back of the haynes repair manuals made for astro vans. you can get them at any autozone or advance
most auto parts dealers have or can print out a routing diagram.