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Old January 22nd, 2013, 07:23 PM   #2
outback auto
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Join Date: 10-26-08
Location: lansing mi
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Originally Posted by muddinman56 View Post
every time i start the truck or shut it off the heater box makes a thumping sound for about 25-35 seconds
just wondering what is causing this and if i can fix it with out takeing the dash off

it is the actuator behind the glove box it opens and shuts the vent .you can fix it or just unplug it
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