SOURCE: chevy s10 broken vacuum line
The plastic line in the wiring harness goes to the heater controls; and believe it or not , the other end goes to the vacuum tank - but its in the FENDER !!!!! behind the ABS, kinda under the drivers side hood hinge - great place to put one ain't it ? No wonder GM is going broke !! Good Luck
SOURCE: Need vacuum diagram
I can't send you a diagram but I can tell you the basics that should get you mobile. Take a vacuum line from the lower front of your carb and hook it to your distributer vacuum advance. Take another from the front of your carb and run it to your EGR valve. It should be beside the carb on the intake manifold. At the rear of your carburator there is a large line coming out. It should be steel. It provides vacuum boost to your power brakes. Hook it up. Make sure all other vacuum outlets on the carb and intake are blocked off and you should be able to get mobile.
SOURCE: 1989 Chevy S10 Blazer, 4.3L V6. 4wd not working.
under the battery is where you need to check first,then follow it down around the right front wheel well,
SOURCE: vacuum hose diagram for a 2001 Chevy Blazer
look on google i can fing everything there if you want email me with your emailaddres i will try to find it for you
SOURCE: i need a connection diagram for a chev blazer
The Vacuum line to the 4wd actuator from under the battery try runs along the passenger side frame to the vacuum harness that is connected to the vacuum switch on top of the transfer case, driver's side.
The 4wd vacuum switch on top of the transfer case (driver's side) will have three vacuum line, one to the actuator under the battery try, one to vent out the vacuum, and the vacuum line it self which runs up towards the firewall making it's way to the vacuum canister on the drivers fender by the brake booster.
Hope this helps your and thank you for using fixya.
http://i11.photobucket.com/albums/a187/swartlkk/general%20automotive/94_vac_overall.gif
http://i11.photobucket.com/albums/a187/swartlkk/general%20automotive/94_4wd1.gif
Testimonial: "The best explanation I could find for the vacuum system operating the 4wd on my Blazer"
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