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My '02 Escalade just started making noise from the AC/heater fan. It is a low hum that gets louder as the speed of the fan increases. When on full blast it gets pretty loud. Is this something an average person can replace? Where is the fan/blower located? I don't want to tear apart the dash, but feel confident I could replace it if accessible from the engine compartment. Thanks, Kevin H
 

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My 99 STS I recently bought has the same issue. Sounds as though something is hitting the squirel cage or fans as it turns! Gets pretty loud when fan is on high. Don't have an answer.. looking for one myself.
 
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