Is it the AC Blower? on 2003 Chevrolet Cavalier

About a year ago, anytime I turned on the windshield defroster I would hear a clacking noise, but when I turned it on the setting to for defrost and to blow thru the vents it would not make the noise, so I just defrosted the windshield in that setting. Then it started making a loud whirring noise when I had the ac blower on. I just tried drowning it out by turning up the radio. Eventually, the air only blew out when it was on the highest level, and then still barely. The air came out of the vents cool. Yesterday it quit blowing altogether..and there still is a very quiet hum when I turn it on. I can feel the slightest amount of cool air in the vents. Is this the blower, or something else? BTW, it is hotter than Hades in TX right now. I think from other forums I could replace the blower on my own, just need to confirm that is what is.

by in Haltom City, TX on August 14, 2009
1 answer
ANSWER by on August 20, 2009
It sounds like you may have a few different problems with your a/c system. My guess is that at this point you just want to get the blower working again. Other that fuses and wiring there are three main items for the blower motor. The switch, the speed control resistor block and the blower motor. From what you describe it sounds as if the blower motor has failed on your 2003 Cavalier. The switch is probably the least likely cause of your problem. Make sure you check connections at the blower motor and the resistor block. The resistor block should also be checked for heat related damage. If everything looks OK that would point to a faulty blower motor.
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