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Old 08-14-2010, 05:36 PM   #1 (permalink)
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2008 Impala passenger dash clicking

I just bought a 2008 Impala last November and have not had a single issue till today. After travelling about 30 miles with the AC on and set to inside, I turned the car off and started hearing a thumping from the passenger side dash. I tried turning the car on and off a few times to see if it would go away, but it did not. I finally turned the AC to vent, then back to inside and shut the car off and it stopped. Later I went to the car to get something out and just opened the driver side door and the thumping started again. I was able to use the same technique to get it to stop. After driving home, I had the same issue after another 30 miles. This time the trick didn't work at first, but after a few tries I got the thumping to stop.

I think it might have something to do with the vent baffle, but I have seen a few posts about the BCM relay causing the thumping sound. Any insight would be grateful.

Thanks,

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Old 08-14-2010, 11:45 PM   #2 (permalink)
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had an 06 ss that did the same thing. it was the blend door motor, they have plastic gears inside, one tooth broke off and when it gets to that spot, starts clicking
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Old 08-15-2010, 12:48 PM   #3 (permalink)
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I made a video of the issue at hand. It seems it is either an issue with the motor/gears, or with something (BCM?) not registering the vent is closed. Let me know what you think.


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Old 08-17-2010, 08:48 PM   #4 (permalink)
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like i said, its the motor that opens the door. remove it, take the cover off and you'll see a broken tooth off one of the gears. you cant just get a gear ,you have to replace the motor assembly
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Old 08-23-2010, 06:12 AM   #5 (permalink)
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Yeah I got the part off and need to order the replacement. For now i just have it set for the inside air so my wife can get around till I have time to run to the dealership and get a replacement part.

Thanks for the suggestions.

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Old 09-01-2010, 08:07 PM   #6 (permalink)
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I am having the same problem with my impala which is also a 2008. The only thing is I dont think I am still under warranty because my ride had 54K. How much does this repair cost?

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Old 09-02-2010, 10:56 PM   #7 (permalink)
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Quote:
Originally Posted by realent View Post
I am having the same problem with my impala which is also a 2008. The only thing is I dont think I am still under warranty because my ride had 54K. How much does this repair cost?
mine was somewhere around 40 bucks
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Old 09-14-2010, 04:30 PM   #8 (permalink)
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sweet. i have an 06 impala and i officially know what that damn noise is... haaa

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Old 09-15-2010, 12:17 PM   #9 (permalink)
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yea this post was helpful....I have an 08 SS also and it just started making that loud clicking noise also. I didn't think my wife knew what she was talking about until I heard it for myself yesterday. Where exactly is the "blend door motor" located so I can just replace it myself?....I'm sure the Chevy Dealership will charge me an arm, leg, and 2 feet to replace it...lol

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Old 09-20-2010, 06:29 AM   #10 (permalink)
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It is behind the glove box.

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Old 09-21-2010, 12:02 PM   #11 (permalink)
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Quote:
Originally Posted by realent View Post
I am having the same problem with my impala which is also a 2008. The only thing is I dont think I am still under warranty because my ride had 54K. How much does this repair cost?
You have a 100k warranty

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Old 09-22-2010, 11:27 AM   #12 (permalink)
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You have a 100k warranty
Are you asking me or telling me?

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Old 10-06-2010, 07:59 PM   #13 (permalink)
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Quote:
Originally Posted by luckybob View Post
Yeah I got the part off and need to order the replacement. For now i just have it set for the inside air so my wife can get around till I have time to run to the dealership and get a replacement part.

Thanks for the suggestions.
I'm having the same problem on my 2006 Impala, I wasn't able to get to the screws to remove the motor, so I just disconnected the electrical connector for a temporary solution. How did you get to the screws to remove the motor? Any suggestions.

Thanks
GFM

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Old 10-11-2010, 07:30 AM   #14 (permalink)
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I just used a small ratchet set and had my wife get to the back screw because she has smaller hands.

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Old 12-01-2010, 09:44 AM   #15 (permalink)
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Anyone have part numbers? I'm having the same problem and would REALLY like to get it taken care of, it's a very annoying sound.

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LinkBack to this Thread: http://www.impalaforums.com/mechanical-and-electrical-problems/255177-2008-impala-passenger-dash-clicking.html
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