HeatFan= loud rumble, gets louder when placed on recirculate - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

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Old 01-19-2008, 04:07 PM   #11
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Default Re: Wow that was a simple fix!!!

Originally Posted by ganzman
WOW I opened the cabin filter cover and looked in with a light and there was a clump of insulation laying on top of the blower fan cage. No wonder it was making noise! I wonder how much insulation is trapped in the heater core??? I am going to try and pull the blower fan and then get a vacuum hose to the core to try and suck it out?????

Thanks for the tip on the insulation coming loose!!
Originally Posted by imidazol
And check with a flashlight looking at the squirrel cage fan that you can see when the air filter is out.
That'* why we suggested looking in with a flashlight with filter out. Several people have found stuff in there. After your post I went out and took the cabin filter out of mine just to check for junk in the impeller for the blower. Nothing there.

Hope that helps your noise and airflow problems.

You can put in a filter even if the frame for it is not there. Both frame and filters are available.
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