gmc safari vacuum hose diagram

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Vacuum hose routing

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I have a replacement motor( read used junkyard motor) in the van and there were vacuum hoses all over the place some connected some not and some split and rotten. Is there anyplace where i can get a routing diagram of the vacuum hoses on a 95? I have searched through the manuals I have and cant find any one that shows the connections on the motor and routing. Is there such a thing? Thanks, A J  

Hope this helps ,  

just so you know, that's from the '93 service manual - your '95 might be the same, but it also might be slightly different.  

The only other I have is for Gen 2 vans , and I thought that since the 95 engines had much in common with 94 it would at least be of some assistance  

Phantom said: The only other I have is for Gen 2 vans , and I thought that since the 95 engines had much in common with 94 it would at least be of some assistance Click to expand...

That is the same diagram I have. Im concerned about the fact that it shows one engine vacuum source and the van has two that I can see and since the diagram doesnt state the location for a starting point Im not sure how the system would work. The one port is manifold vacuum( on the rear of the chamber and above and to the right of the distributor) and the other is direct( Im guessing because it is right there at the base of the distributor). At what point does one start with the diagrams engine vacuum? Secondly there are more lines to the dash vacuum than shown in the diagram. Do I just splice into one on the chance that it will work? Does it need a check valve? these are some of the questions and I cant find in a diagram nor can I find the answers to. If I delete the pcv hose and just stick a regular breather there will it effect the computer settings? Would I then be able to use that manifold vacuum port for something else or should it just be blocked? See what I mean, more questions and nothing to go by that is my problem. I am from the pre computer era so I am concerned with any elimination of the lines and how that effects the computer and its resulting actions. I dont want to eliminate and lines or reroute any until I know if it is going to effect the computer.  

The pcv valve will have gas vapors and it needs to remain as it is designed , what is it you want to do ? Is there something that is not working that needs to work?, The port on the manifold can be branched off of , and the cruise control has a port. If you only want a vacuum source the manifold port is likely the best bet , are you trying to add something that is not factory ? here is another diagram that has the lines for the HVAC , but not the places on the engine, any unused vacuum ports should be blocked off or it will effect the way the engine runs.  

each year evne same model and engine has several different vacuum possibilities varying between plant and country built and emissions level and other factors evne what tranny was in it there is a vacuum diagram under the hood somewhere on rad support or enfine cover or air cleaner housing etc look around  

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• Vortec 4.2L I-6

4.2L vacuum line diagram?

• Thread starter David11946
• Start date Mar 3, 2013

• Mar 3, 2013

Iv'e been looking around for a vacuum line diagram for a 4.2L I6 and I can't seem to find one. Can someone let me know where to find one? I bought my TB used and I thought they came from the factory with a sticker somewhere under the hood (like the old models). My TB doesn't have it and I haven't seen one in the Haynes manual. I have an open vacuum port on the intake manifold plastic cover at the front. It is in the same side as the air resonator. I only just noticed it while I was changing plugs and coils today. Would anyone know where that port is to be connected ( or the diagram would be great)? Thanks for the info if you have it.  

You need to fill out your profile info so that we know what model year you have when we look at the thread. If yours is before 07, I think that's the year the went to the MAP sensor by the air cleaner, then you have two lines for vacuum off the resonator. One of the lines comes off the valve cover and attaches to the lower left of the resonator. Its for the crank case vent and is about a 1/2" in diameter. If its on the upper right then thats the fuel pressure regulator and is about 1/8" in diameter. Hope this helps.  

lol there's no vacuum line diagram because there's a sum total of about 3 lines. There's the big ones that go to the booster and evac, and one little one for the fuel pressure regulator. Think that's it. Show us a pic.  

• Feb 2, 2021

David11946 said: Iv'e been looking around for a vacuum line diagram for a 4.2L I6 and I can't seem to find one. Can someone let me know where to find one? I bought my TB used and I thought they came from the factory with a sticker somewhere under the hood (like the old models). My TB doesn't have it and I haven't seen one in the Haynes manual. I have an open vacuum port on the intake manifold plastic cover at the front. It is in the same side as the air resonator. I only just noticed it while I was changing plugs and coils today. Would anyone know where that port is to be connected ( or the diagram would be great)? Thanks for the info if you have it. Click to expand...

• Feb 3, 2021

What's this hose? (Long Wheel Base)

• Jun 28, 2021

so that should be plugged on my LS??  

So this Vacuum Port on the intake manifold should be capped on my 02 LS?  

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walt45806 said: So this Vacuum Port on the intake manifold should be capped on my 02 LS? Click to expand...

Missing vacuum line?

TequilaWarrior

• Jun 29, 2021

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Vacuum diagram

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2002 gmc safari vacuum hose diagram

Vacuum hose diagram

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SOURCE: wher can i find where a heater vacuum hose goes on

alldata, on line shop manuals should help!

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SOURCE: I need a vacuum hose diagram for 1999 gmc jimmy

go to a parts store and get the haynes manual. they have them for pretty much everything. they're only like 20 bucks and you can rebuild your car by going through it...they have wiring, vaccuum, brakes, everything. or google it. or check with GM, they should have that info

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THat goes to your map sensor. If you look very closely under your hood there will be a vac line diagram there

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SOURCE: need vaccum hose diagram for

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Complete engine vacuum diagram for 1978 403?

• Thread starter dave stragand1
• Start date Oct 17, 2018
• GMCnet Archive

dave stragand1

• Oct 17, 2018

Hi All, Does anyone have a complete diagram of the vacuum hoses on a 1978 403? A previous owner has disconnected and/or removed most of the vacuum lines on my coach, so I'd like to put it back to original (including a TVS valve, and the vacuum control valve and solenoid valve if they are also good to have). I have seen several partial diagrams in the maintenance manual, but have not seen anything that includes all of the carb and manifold vacuum ports, and that also includes items such as the HVAC's vacuum line, the snorkel heat valve, and the trans kickdown. Does a complete diagram showing 'what goes where' exist? Thanks, -Dave 1978 Transmode near Pittsburgh  

David, See if this meets your needs. This is the California layout but is simular with a few extras. http://www.gmcmhphotos.com/photos/carbon-or-vapor-canister/p58051-carbon-canister-vac-77-2f-78-gmc.html JR Wright 78 Buskirk Stretch Michigan > > Hi All, > > > > Does anyone have a complete diagram of the vacuum hoses on a 1978 403? A > previous owner has disconnected and/or removed most of the vacuum lines > on my coach, so I'd like to put it back to original (including a TVS > valve, and the vacuum control valve and solenoid valve if they are also > good to have). > > > > I have seen several partial diagrams in the maintenance manual, but have > not seen anything that includes all of the carb and manifold vacuum > ports, and that also includes items such as the HVAC's vacuum line, the > snorkel heat valve, and the trans kickdown. Does a complete diagram > showing 'what goes where' exist? > > > > Thanks, > > > > -Dave > > 1978 Transmode near Pittsburgh > > _______________________________________________ > GMCnet mailing list > Unsubscribe or Change List Options: > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org  

adolph santorine

Dave Original TVS are likely inoperative. Be suspect of new ones and NOS. Dolph Santorine DE AD0LF Wheeling, West Virginia 1977 ex-Palm Beach TZE167V100820 1-ton, Sullybuilt Bags, Reaction Arms, Manny Transmission, EV-6010, > > David, > See if this meets your needs. This is the California layout but is simular with a few extras. > > http://www.gmcmhphotos.com/photos/carbon-or-vapor-canister/p58051-carbon-canister-vac-77-2f-78-gmc.html > > JR Wright > 78 Buskirk Stretch > Michigan >> >> Hi All, >> >> >> >> Does anyone have a complete diagram of the vacuum hoses on a 1978 403? A >> previous owner has disconnected and/or removed most of the vacuum lines >> on my coach, so I'd like to put it back to original (including a TVS >> valve, and the vacuum control valve and solenoid valve if they are also >> good to have). >> >> >> >> I have seen several partial diagrams in the maintenance manual, but have >> not seen anything that includes all of the carb and manifold vacuum >> ports, and that also includes items such as the HVAC's vacuum line, the >> snorkel heat valve, and the trans kickdown. Does a complete diagram >> showing 'what goes where' exist? >> >> >> >> Thanks, >> >> >> >> -Dave >> >> 1978 Transmode near Pittsburgh >> >> _______________________________________________ >> GMCnet mailing list >> Unsubscribe or Change List Options: >> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org > > > _______________________________________________ > GMCnet mailing list > Unsubscribe or Change List Options: > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org  

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