The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-19-2016, 07:10 PM   #1
WarpathEngineering
Registered User
 
WarpathEngineering's Avatar
 
Join Date: May 2007
Location: Erlanger, KY
Posts: 99
What is this?

Can anyone identify this device, explain what it's for and tell me if I need to keep it? It has a vacuum hose that runs to a fitting screwed into the top of the intake manifold right behind the carb.
Attached Images
  
__________________
1980 GMC Sierra Grande C15 1987-1992
1988 Chevy Silverado K1500 1992-1996
1978 Chevy K5 Blazer 1998-2002
1998 GMC Sierra SL K2500 2002-2010
2007 GMC Sierra Classic 2500HD LBZ 2010-Present
1978 Chevy Silverado K20 2016-Present
WarpathEngineering is offline   Reply With Quote
Old 02-19-2016, 07:39 PM   #2
GM-power
Registered User
 
GM-power's Avatar
 
Join Date: Mar 2012
Location: Little Rock, Arkansas
Posts: 770
Re: What is this?

Think it's a vacuum canister for your vent door in the HVAC box.
__________________
1979 Sierra Classic Heavy-half
1996 Silverado x-cab "the daily"
GM-power is offline   Reply With Quote
Old 02-19-2016, 07:46 PM   #3
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
Re: What is this?

Vacuum
accumilator
mongocanfly is offline   Reply With Quote
Old 02-19-2016, 11:40 PM   #4
chrismoore701
Registered User
 
chrismoore701's Avatar
 
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,326
Re: What is this?

It is the vacuum canister used to operate your heat system. It operates the ducts when you change from heater to vents to the defrost. You need this
__________________
Chris
_______________________________
1979 Chevy Stepside SPORT
2018 Chevy Silverado, 39 years apart
My build 2008-2016. http://m.imgur.com/a/bURrE
chrismoore701 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:07 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com