Mechanics

AIR CONDITIONING/HEATER

2004 Cadillac SLS

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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Shaun1981
July 6, 2010.




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.

Factoryjack
Jul 7, 2010.
Is sounds like a loud humming/vibrating sound

Tiny
Shaun1981
Jul 8, 2010.
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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Factoryjack
Jul 8, 2010.

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