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4 wheel drive vacuum lines

Tiny
ALFRED4
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
The 4 wheel drive wont shift also I need the vacuum diagram
Monday, November 30th, 2009 AT 10:26 PM

9 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Below is a diagram for your transfer case. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
RAFAPAL
  • MEMBER
  • 3 POSTS
  • 1997 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I have a chevy blazer s10 4x4 1997, I need the vacuum hose diagram, I lost some hoses in the last repair of the automatic transmission and want to use the 4x4, thanks in advance
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Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Hope this helps


https://www.2carpros.com/forum/automotive_pictures/139033_coil_2.jpg

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+18
Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
RAFAPAL
  • MEMBER
  • 3 POSTS
The hose conected to the transfer back, and other go back the truck, and one connected to a box in the front, where should be connected?
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+3
Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
One hose is connected to engine vacuum, one hose goes to the front diff actuator on pass front fender area under battery and the other hose is just a vent
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+5
Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
The vacuum switches on the transfer case fail all the time so if your still having a problem then repalce that too
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Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
RAFAPAL
  • MEMBER
  • 3 POSTS
I will try with the information you provided me. Thanks
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Thursday, April 4th, 2019 AT 12:11 PM (Merged)
Tiny
FERLEY22
  • MEMBER
  • 1 POST
  • 1989 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
When 4x4 is engaged, there is transmission fluid being drawn into the engine via vacuum. Is this a vacuum actuator problem or another booger.
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Sunday, April 25th, 2021 AT 11:08 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Could be the vacuum switch on the transfer case.Have any of the vacuum lines been moved or any work done on it? If the vent line is put on the engine it can do that.If nothing has been changed recently, it is most likely the vacuum switch on the transfer case.


https://www.2carpros.com/forum/automotive_pictures/1639_blazer2_1.jpg

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Sunday, April 25th, 2021 AT 11:08 AM (Merged)

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