AIR CONDITIONING/HEATER

2004 Cadillac SLS

Tiny

shaun1981

July, 6, 2010 AT 9:05 PM

Air Conditioning problem
2004 Cadillac SLS V8 Front Wheel Drive Automatic 54,000 miles

My Air conditioner and/or heater- defrost etc. Is making is really loud the higher I set the fan, it blows cold but it's really loud, is there a reason for this?

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Tiny

factoryjack

July, 7, 2010 AT 10:03 AM

Loud in which way? If there is a rumble type noise, there could be some debris in the blower fan. Have seen over time leaves, foam, parking pass/receipt, dog food, rodents, grass, etc.

Tiny

shaun1981

July, 8, 2010 AT 9:31 PM

Is sounds like a loud humming/vibrating sound

Tiny

factoryjack

July, 8, 2010 AT 10:28 PM

Sounds like there is some debris in the fan, it would need to be lowered and inspected. Another possibility is a broken impeller, but they are pretty tough.

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