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2004 Cadillac SLS air conditioning/heater

Tiny
SHAUN1981
  • MEMBER
  • 2004 CADILLAC SLS
  • V8
  • FWD
  • 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?
Tuesday, July 6th, 2010 AT 9:05 PM

3 Replies

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 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
  • MEMBER
  • 2 POSTS
Is sounds like a loud humming/vibrating sound
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Thursday, July 8th, 2010 AT 9:31 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 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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