2008 Impala passenger dash clicking - Page 2 - Chevy Impala Forums
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post #16 of (permalink) Old 12-06-2010
GFM
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No, the noise you are hearing are from the servo motor that control the vent from inside to outside air. I had two of the motors go bad, one as I mention and the other was for the passenger side temperture control vent. The GM part # 15844096 (made in China) GM sells them for app. $40-$50. These two were fairly easy to replace, I replaced both motors in about an hour. You will need a 1/4" rachet driver and 5.5mm socket. The easiest way I found to get to these two motors, is by removing all items from glovebox and let the gloovebox open down to the floor. You will have to help it pass the stops. You should be able to see both servo motors from the glovebox opening. I would first verify that you are removing the correct servo motor by unpluging the power connector first and trying it to make sure the noise stops. I hope this helps.
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post #17 of (permalink) Old 05-14-2011
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This good info to know. But, has anyone thought that maybe there is a problem with the Remote start telling the BCM to turn this on? Mine starts clicking when I open my door when the car is not running. I would think after replacing parts and it happens again to look into the Remote/BCM potential.
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post #18 of (permalink) Old 05-16-2011
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Vent door chatter

After replacing the two servo motors, I opened the gear cover on both servo motors and found both had gears with broken off teeth which cause the vent to chatter. My chatter vent doors issue was resolved by replacing the two defective servo motors.
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post #19 of (permalink) Old 07-02-2011
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I registered because of this very problem on my 2009 Impala SS. My clicking seems to be isolated to just the driver side vents. Is that accessible from the glove box as well?
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post #20 of (permalink) Old 07-04-2011
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Driver side vent location

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Originally Posted by ThePeter View Post
I registered because of this very problem on my 2009 Impala SS. My clicking seems to be isolated to just the driver side vents. Is that accessible from the glove box as well?
I only had to replaced the inside/outside vent and passenger temp. control servos so far and they were accessible from the glove box. I'm not sure where the driver vent control is located, Sorry!
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post #21 of (permalink) Old 09-19-2011
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Help. Ac making knocking noise

I have a similar problem. I just bought a 2007 impala lt with the 3.5 L v6. There is no problem with the ac when its on but when I turn it off it makes a knocking noise from the passanger side for about 30 sec then stops. It ony does it after turning off the ac or vehicle. I was looking this up but saw a couple different answers. Can any one tell me what this could be and explain to me how I can fix it? Sorry for asking again if already answered but im still having trouble with this any help would be greatly appreciated.
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post #22 of (permalink) Old 09-26-2011
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Mine just started doing that as well. I just had the drivers side servo replaced with the same exact problem, except it would additionally grind for awhile after I turned the car on.

When I brought it to the dealership, they said the servo was getting stuck in the on position, which actually drained and killed my old battery.

Previously, it was the blend doors, but I think the problem now is whatever actuator switches from windshield to passenger vents.
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post #23 of (permalink) Old 09-26-2011
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You have a 100k warranty
yes but thats the powertrain warranty......the 3yr/36,000 mile bumper to bumper warranty would cover that....but obviously hes over it
post #24 of (permalink) Old 09-26-2011
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Quote:
Originally Posted by ab2 View Post
I have a similar problem. I just bought a 2007 impala lt with the 3.5 L v6. There is no problem with the ac when its on but when I turn it off it makes a knocking noise from the passanger side for about 30 sec then stops. It ony does it after turning off the ac or vehicle. I was looking this up but saw a couple different answers. Can any one tell me what this could be and explain to me how I can fix it? Sorry for asking again if already answered but im still having trouble with this any help would be greatly appreciated.
ab2, I had this problem twice now. I will paste my previous answer to this question below:
No, the noise you are hearing are from the servo motor that control the vent from inside to outside air. I had two of the motors go bad, one as I mention and the other was for the passenger side temperture control vent. The GM part # 15844096 (made in China) GM sells them for app. $40-$50. These two were fairly easy to replace, I replaced both motors in about an hour. You will need a 1/4" rachet driver and 5.5mm socket. The easiest way I found to get to these two motors, is by removing all items from glovebox and let the gloovebox open down to the floor. You will have to help it pass the stops. You should be able to see both servo motors from the glovebox opening. I would first verify that you are removing the correct servo motor by unpluging the power connector to the servo first and trying it to make sure the noise stops. I hope this helps. By the way the plastic gears on the servo motor break off causing the servo to chatter, causing the knocking noise.
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post #25 of (permalink) Old 09-27-2011
 
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Quote:
Originally Posted by ThePeter View Post
Mine just started doing that as well. I just had the drivers side servo replaced with the same exact problem, except it would additionally grind for awhile after I turned the car on.

When I brought it to the dealership, they said the servo was getting stuck in the on position, which actually drained and killed my old battery.

Previously, it was the blend doors, but I think the problem now is whatever actuator switches from windshield to passenger vents.
Was this fixed once under warranty? I would be happy to look into this for you as well with more information including your VIN. Please feel free to contact me privately. Thank you in advance.

Tricia, GM Customer Service.
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post #26 of (permalink) Old 10-03-2011
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Both times it has been fixed under warranty, fortunately. Each servo motor went bad (first the driver's side, then the passenger's side)
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post #27 of (permalink) Old 10-10-2011
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Dorman has it

I have the P/S problem now.Found several Dorman with same number that should fit on Ebay.The part # is 604-108.
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post #28 of (permalink) Old 06-13-2014
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Question clacking noise under dash 2006 impala

I removed one actuator and dis-connected the connector to the other actuator and I still get a loud clacking noise. How is this possible ?? Is there something else other than the fresh air and re circulating actuators that is responsible ?? Do the temp controls (dual zone) have
solenoids or something to make a clacking noise ??
post #29 of (permalink) Old 06-20-2014
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had the same problem with 2 of the actuators now having that problem with the third. 07 ls 3500 engine. problem is i don't know where the one for temp control is.
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post #30 of (permalink) Old 09-11-2014
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Chattering from inside the dash area with no key and car sitting with no doors open, no engine running. Is there a relay that is receiving power from battery and trying to function? Sure sounds like it. Replace inside and outside air circulators already due to cheaply built plastic gear teeth. I have owened several Camaros and other Chevrolets and they ALL lack quality control and are usually electrical nightmares with improper routed wiring.
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