Chevrolet Forum - Chevy Enthusiasts Forums

Express, Savana & G-Series Vans Offered in both a full size van, or a large box truck, the Express is the modern GM workhorse.

Chevrolet Express
Platform: GMT Van

Vacuum diagram

Thread Tools
 
Search this Thread
 
Old May 2, 2021 | 5:57 PM
Share
  #11  
mountainmanjoe's Avatar
mountainmanjoe
Super Moderator
 
Joined: Feb 2017
Posts: 6,207
Likes: 689
Default
the yellow thing at the 3-way is the check-valve.

One hose should go to the tank. The 2nd should go through the firewall to the cabin. And the 3rd is the source, from the engine intake manifold.
Reply
0
Old May 5, 2021 | 2:32 PM
Share
  #12  
Sv4.3's Avatar
Sv4.3
Thread Starter
CF Beginner
 
Joined: Apr 2021
Posts: 7
Likes: 0
From: Michigan
Default
Ok awesome. Where does the check valve go and where does it face?
Reply
0
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1986 Chevy G10 Van Vacuum Hose Diagram
1986ChevG10
S-10 & Blazer
0
Feb 12, 2016 5:43 PM
Vacuum lines Diagram
vmc12
Silverado, Sierra & Fullsize Pick-ups
1
Apr 26, 2011 9:26 PM
Vacuum Diagram
Tommyj
S-10 & Blazer
1
Apr 6, 2010 11:17 AM
vacuum line diagram
bperu224
Tahoe & Suburban
2
Jul 26, 2009 6:02 PM
Vacuum system
1986c10
General Tech
1
Apr 17, 2008 8:55 PM
Back to Subforum
Express, Savana & G-Series Vans
View Next Unread
Which 6" Lift Kit ?




Advanced Search

All times are GMT -5. The time now is 5:38 AM.