Air conditioning switch will not change from floor or legs to face or upper vents.

Tiny
KENNETH A IDLE
  • MEMBER
  • 2002 DODGE TRUCK
  • 4.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 217,785 MILES
That's all.
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Monday, September 15th, 2014 AT 1:41 PM

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Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,005 POSTS
The vent doors are vacuum actuated. Check for vacuum leaks both under the dash and check for the supply that will go through the firewall to the engine. Most likely, there is a leak.
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Monday, September 15th, 2014 AT 6:23 PM

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