heat/ac fan hum

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heat/ac fan hum - 5/26/2008 5:03:36 PM    twenty8   Posts: 5 Joined: 5/21/2008 Status: offline I have a 2003 Trailblazer where the fan just started humming with a low pitch and it definitely adds volume to the system when it's on - same noise whether it's on heat, a/c, or just the vent fan. It was working and then suddenly the hum started - yet the fan is still blowing air just fine. It is obviously coming from the blower motor - wasn't sure if this was a sign of it getting ready to quit on me or if it was something else anyone was knowledgeable about. Any ideas on how to fix it? Post #: 1

RE: heat/ac fan hum - 5/27/2008 5:03:47 AM    shawnvw   Posts: 1097 Joined: 1/18/2008 Status: offline Sounds like it might be out of balance, or a bearing is going on it. If its out of balance, there might be leaves or some other junk in it, or a weight has come off of the blades. If the bearing is bad, you would CAN get it fixed, but its usually cheaper to buy a new motor _____________________________ If you have a question, ask it in the forums. I will no longer be answering questions sent to my email. (in reply to twenty8) Post #: 2

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