1995 GMC Yukon vacuum routing to heater valve

1995 GMC YUKON
215,000 MILES • V8 • 4WD • AUTOMATIC
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YUKONREMS
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  • 6 POSTS
I need to find the location fo the heater valve vacumm line.
Nov 3, 2008 at 4:47 PM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic


https://images.2carpros.com/forum/automotive_pictures/99387_Graphic1_36.jpg

Heater and temperature is controlled by cable and not vacuum what is it that you have a problem with need manual CHECK IT @ https://www.2carpros.com/kpages/auto_repair_manuals.htm
Nov 6, 2008 at 12:23 PM
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YUKONREMS
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The heater valve IS vacuum actuated. It is a replacement for the same exact thing that was leaking. The in dash control is only electrical connections behind the dash. The control has rear barn door defroster and a/c.
I can not find the vacuum source to control the valve.

Thanks, Russ
Nov 6, 2008 at 6:57 PM
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