1999 GMC Safari air only comes out of deforst

HOSEA101

MEMBER
1999 GMC SAFARI
6 CYL
2WD
AUTOMATIC
160,000 MILES

The air only comes out of the deforst vent. Ac works but does not come out of front of ip not matter what I have the control set to

Wednesday, August 26th, 2009 AT 5:39 AM

1 Reply

2CARPRO JACK

MECHANIC
11,533 POSTS

There is avcuum line that goes from the passenger side of the engine compartment to the drivers side of the engine where it hooks to a vacuum source. You will find itis broken, most likely on the engine. If you pop the hood. The small black plastic line will come out of the firewall on the pass. Side, and cross to the drivers side of the engine.