on my 92 explorer i had the same problem . i just bought a new blower fan for it. the fan was in a metal casing attached to the firewall on passenger side by the hood hinge . hope this helped.
The coil is dirty.Hose it out with a water hose.
55 degrees to 60 degrees
There are 2 filters you access in the glove box. If they are dirty you get almost no air. Clean or replace them and be amazed at the difference
There should be at least a 12 degree split between the incomming air and the air comming out of the vents.
The electric heating elements are probably turned on.
The climate control is not operating for the passenger side. Check to insure the physical controls work, and the diverter vents are opening to let the cool air to the passenger side.
Cold air return vents are the ones on the wall
maybe the a/c needs to be recharged with freon
If the air vents of the Chevy trailblazer 2004 are not blowing air, have the fuel pump checked.
There are a few reasons why a central air unit is not blowing cold air. The coils may be dirty, the unit may need freon, or the thermostat could be broken.
Blower motor working? Could be bad vacuum motor or connection could be plugged evaporator
The most common cause of an air conditioner not blowing air is a plugged filter. Be sure your filter is clean.