2004 CADILLAC SLS AIR CONDITIONING/HEATER

  • Tiny
  • shaun1981
  • 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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Tuesday, July 6th, 2010 AT 9:05 PM

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  • Tiny
  • factoryjack
  • Expert
  • 4,262 posts

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.

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Wednesday, July 7th, 2010 AT 10:03 AM
  • Tiny
  • shaun1981
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Is sounds like a loud humming/vibrating sound

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Thursday, July 8th, 2010 AT 9:31 PM
  • Tiny
  • factoryjack
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  • 4,262 posts

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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Thursday, July 8th, 2010 AT 10:28 PM

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