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Old 12-18-2011, 07:51 AM   #1 (permalink)
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Question 08 impala cabin fan blower motor noise

ok, my impala is 4 and 1/2 years old and has 73,000 miles

my heat/ac air blower fan has gotten pretty noisy lately

it still blows normal amount of air/ controlled well/ on/off normally , fan speed controlled normally/defrost normal

if the fan is OFF, no noise, however, even if the fan is just turned to 1, i hear a slight humming/subtle vibration

its like one second hum the next silent

its like hummmm........ hummmm ...... hummmm....... huummmmm

i only hear it if it is quiet ... if the radio is on / moderate highway noise, i dont hear it (it is not very loud/not very obvious)

do you guys think its time to change the blower motor/resistor ??

there is no debris... i change the filter every 8,000 miles and i keep the air intake area very clean

let me know what you think.. thanks for reading

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Old 12-23-2011, 02:26 PM   #2 (permalink)
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Quote:
Originally Posted by tommymac23 View Post
ok, my impala is 4 and 1/2 years old and has 73,000 miles

my heat/ac air blower fan has gotten pretty noisy lately

it still blows normal amount of air/ controlled well/ on/off normally , fan speed controlled normally/defrost normal

if the fan is OFF, no noise, however, even if the fan is just turned to 1, i hear a slight humming/subtle vibration

its like one second hum the next silent

its like hummmm........ hummmm ...... hummmm....... huummmmm

i only hear it if it is quiet ... if the radio is on / moderate highway noise, i dont hear it (it is not very loud/not very obvious)

do you guys think its time to change the blower motor/resistor ??

there is no debris... i change the filter every 8,000 miles and i keep the air intake area very clean

let me know what you think.. thanks for reading

Hi i just fixed some noise i had from my 07 with 66,000 miles. In my case my humm was also on level one and it was comming form the passenger side vent (farthest right on dash) I thought it was the cabin air filter so i changed and shook out the debris. It still made noise. I then went under the glove box. you will see some black plastic shrouding and inside some foam which lines it. In my case i moved the foam around and got the noise to stop completely. I think it was blocking the blower vent partially. Im not sure if this is the same noise you are hearing however. Mine only came from that side of the car. Hope this helps a bit

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