I have a 2003 monte carlo ls I had the intake gasket replaced but mechanic left a*vacuum*hose hanging and my ac is now blowing very poor and through all the vents I cant find where it goes if some one can please post any pics

 

Is this vacuum line hanging in the engine compartment under the hood or is it hanging inside the vehicle under the dash? Some things like the blend and mode actuators are vacuum controlled.

 

No it is hanging under the hood the line comes from the the left side goes over the strut section and then its hanging behind the motor

 

Im going to post a picture in my album so you can see it

 

Unless it's been removed, there should be a sticker on the radiator support that shows the vacuum line routing.

This may help:

 

Mike thank you. For the diagram the vacuum hose i have loose seems to be number 4 but i cant tell where it goes exactly it look like it goes to the intake manifold ?? Isbthat correct