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Vacuum line diagrams

Tiny
RRMAGG06
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 4WD
  • MANUAL
  • 156,000 MILES
There is a vacuum hose coming from the manual transmission area into the engine compartment that is loose. I cannot find where it's supposed to go to.
Sunday, May 3rd, 2015 AT 8:14 AM

20 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
Knowing a whole bunch more about jeep cjs than yours

Are you sure it's not a "vent" for one of the drive train components (it might even have a plastic-like cap over the loose end where fresh air can enter?

Other than that

I did go into "prodemand"

I found "only" 2 vacuum diagrams that showed up for a 4.3l

They are at the bottom

The medic
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Monday, June 3rd, 2019 AT 6:20 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I attached the diagrams for the transfer case and the emissions system. Let us know if you need more info. Thanks
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Tuesday, May 26th, 2020 AT 5:23 PM
Tiny
MOOSE1752003
  • MEMBER
  • 1 POST
  • 2000 CHEVROLET BLAZER
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
Hi, I need to replace all vacuum lines on my blazer due to age and deterioration. I would appreciate it if you could supply me with a routing diagram for vacuum lines as I've had to remove and plug a couple of the the lines and am now not sure of the routing. Thank you, Mark
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Tuesday, September 8th, 2020 AT 11:26 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Here are the vacuum diagrams our manuals show. If you done see what you need here you may want to try the dealer
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Tuesday, September 8th, 2020 AT 11:26 AM (Merged)
Tiny
RICKYJOE99
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 150,009 MILES
I've got some vacuum lines off and don't know where they go. Can you help me?
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
Here you go, hope this helps! Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
CLOVER12
  • MEMBER
  • 3 POSTS
  • 1997 CHEVROLET BLAZER
I need a vacuum diagram from the transfer case forward
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS


https://www.2carpros.com/forum/automotive_pictures/30961_vac_1.jpg

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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
CLOVER12
  • MEMBER
  • 3 POSTS
I need to know where the vacuum lines go from the transfer case one I know goes to the actuator and one to the canister on the hood where does the third one go to
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
LLHOCH
  • MEMBER
  • 1 POST
  • 1997 CHEVROLET BLAZER
Heater problem
1997 Chevy Blazer 6 cyl Four Wheel Drive Automatic

I can not figure out where the vacuum hose that runs
the door in the heater system to trip from defrost to
panel vents. I was checking the vacuum hose under the hood and the hose came off from somewhere and I
have looked and looked but can not find a place to connect hose
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Do you mean you have a loose vacuum line under the hood and are looking for it's connection? If yes post the location where it comes out of the fire wall and I'll look it up. I've got a 97 myself, but there are a few lines under there.
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
BJCHARLE
  • MEMBER
  • 2 POSTS
  • 1996 CHEVROLET BLAZER
1996 Chevy Blazer 6 cyl Four Wheel Drive Automatic

I was just wondering if the vacuum hose was a normal rubber hose or something different
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
The vacuum hose is like any other one you can buy in a store. There are cases where there is pressure involved and those hoses are made heavier.
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
DANVONBEHREN
  • MEMBER
  • 2 POSTS
  • 1996 CHEVROLET BLAZER
There are 3 vacuum lines that run from the top of the tranny, what are they and were do they go?
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
They are for the transfer case. Heres the diagram


https://www.2carpros.com/forum/automotive_pictures/1639_blazer_3.jpg

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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
DANVONBEHREN
  • MEMBER
  • 2 POSTS
Can you tell me where on the engine point (a) connects to.
This is a 1996 v 6 4.3 4x4 engine came out of 2 wheel drive vehicle
thank you
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
The vacuum port on the back of the intake plenum, near the distributor
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Tuesday, September 8th, 2020 AT 11:27 AM (Merged)
Tiny
ROOSTER36
  • MEMBER
  • 2 POSTS
  • 2001 CHEVROLET BLAZER
I am replacing a motor in my buddy's blazer, and need a diagram of the entire motor. Anyone know where I can find one?
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Monday, March 29th, 2021 AT 11:28 AM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
What exactly you need diagram for? vacuum lines, ground wiring, ...etc..?? not really sure what you need but below are couple of pics for the engine..


https://www.2carpros.com/forum/automotive_pictures/261618_Graphic_276.jpg



https://www.2carpros.com/forum/automotive_pictures/261618_Graphic2_34.jpg

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Monday, March 29th, 2021 AT 11:28 AM (Merged)
Tiny
ROOSTER36
  • MEMBER
  • 2 POSTS
Thanks so much. This helped tremendously. I still have a couple of hoses that I'm not sure of, but I don't know if they would have a super detailed diagram of those.

Thanks again.
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Monday, March 29th, 2021 AT 11:28 AM (Merged)

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