Where is the vacuum modulator valve located on a 79 k5 blazer?

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: Where is the horn located on an 1989 Chevy k5

it is underneith a bracket behind the driver side headlight. :)

SOURCE: 1992 5.7 350 Chevrolet Blazer

It should be on the trany with a black rubber hose stuck on it,or mabey a steel tubing. Good luck

Thomas Perkins

• 15088 Answers
• Posted on Aug 13, 2012

SOURCE: vacuum line sticker/1976 k5 blazer

http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c152800aef5b Here are your vacuum diagrams.

SOURCE: no fuel or spark on my 89 chevy k5 blazer

change coil pickup which is in the bottom of the distrubuter