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supertech, mastertech
Category: Car
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Experience:  ase master auto tech,triple chrys master tech,42 yr experinece,adv. level spec. ASE. HEV chrys spec.
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2003 chevy: air but there is nothing coming out of the vents

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I have a 2003 chevy silverado, the a/c is on but there is not air coming out of the vents. When you turn the a/c on there is a sound like a release of air but there is nothing coming out of the vents? Even if the a/c is off there is no air coming out of any of the vent settings...what could be the problem?

Hi my name is John.


Does the blower motor come on at all?

Customer: replied 8 years ago.
What is the blower motor?

That what blow the air.


When you turn on the heater does it blow any air out heater vents?


What size engine do you have?


Is this a 1500or 2500 pick up?


Do you have automatic air or manual?

Customer: replied 8 years ago. air is coming out of the vent on any setting. Whether it be the heater or a/c.

I would check the fuse first.


Here a picture where it is under the hood.



It a 40 amp fuse.


Let me know.

Customer: replied 8 years ago.
the fuse is good...what else could be the problem?

If you have automatic air where you set the temp.


There a TSB that says to replace the blower motor control module for this problem.


But you didn't tell me if you have automatic air or manual?

Customer: replied 8 years ago.
manual air

I would remove the panel under the dash on the right side and disconnect the blower motor resistor connect and test for power at termial g,if there power i would replace the blower motor resistor.






You could also test to see if there power at the blower motor it self it right next to the resistor.If there power to the motor than the resistor is good.


Let me know

Customer: replied 8 years ago.
how do i test for power?

The easy way is with a test light.


You could take a light bulb and to wires hook one to ground and the other to the pin g in connector .It should light up.


Tail lamp bulb will work.

supertech and 9 other Car Specialists are ready to help you
Customer: replied 8 years ago.
terminal g wire is melted to connector and the connector is corroded...Thank You very much for your time

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