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Old 06-10-2009, 12:06 PM
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i have a 06 impala ss, this problem just started a couple days ago, when the vehicle is started theres a loud clicking sounds coming from the dash.. what is it? anyone have this experience? its really annoying, it will only do it for about 30 seconds then shut off, possibly only when using the remote start. im going to double check right now but i dont think so.. any info would be appreciated!.
Old 06-10-2009, 01:15 PM
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Air in cooling system!
Old 06-10-2009, 02:58 PM
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Sounds to me like the blend door is sticking or otherwise malfunctioning. IIRC, Corny40 had a similar issue that he got fixed. If his post isn't here, it's at www.NAIOA.com.
Old 06-10-2009, 10:15 PM
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hmm coulditn find his thread, how do i fix this if it is in fact bad? it only does it when i use remote start..
Old 06-11-2009, 09:17 AM
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It's gotta be the HVAC system, since no matter the temp, it kicks on when you use remote start. I don't have the answer, but I'll look at NAIOA for Corny40's thread.

EDIT: http://www.naioa.com/v2/modules.php?...cking&start=15

But check for air in the system, as Ill_born mentioned...bleeding the system would be the easiest & least expensive DIY repair.

Last edited by BuffaloSS; 06-11-2009 at 09:24 AM.
Old 06-11-2009, 10:25 AM
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how do i check for air in the system? iv never heard of this before...
Old 06-11-2009, 12:50 PM
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Never done it myself, but Google is your friend:

http://www.denlorstools.com/home/dt1...ng_system.html

http://www.ehow.com/how_5005108_purg...ng-system.html
Old 06-11-2009, 02:39 PM
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how would air in my cooling system make my flapper door stick?
Old 06-11-2009, 07:40 PM
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I believe what he's saying is that the sound could be air in the system...not necessarily affecting other parts. i'm thinking its the electrical/actuator problem, but bleed the system just to make sure ur not wasting time n money on parts/labor.
Old 06-11-2009, 08:10 PM
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Sorry been swamped.
Select max heat and max blower and then follow these easy instructions.

http://i471.photobucket.com/albums/r..._ss/img160.jpg

It could be an actuator but it would give a code in the body control module. There are more than two actuators up in there and they all, also depend on many other sensors to get it right.(ECT,IAT,MAF temp,AC pressure ,Rpm and more)

These LS4`s naturally trap air in the heater hoses atop of the engine and when they start its a mad dash to try and excape but it cant. So you have to do it.
Old 06-11-2009, 10:50 PM
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yea i just dont understand? it only does this when the remote start is used any other time and it doesnt..
Old 06-12-2009, 02:25 AM
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Sorry it took me awhile to get to this, but Buff found my post for you. I hardly ever remote start my car, so of course, I never noticed a correlation. Just started happening one day. Haven't had a problem since it got fixed.
Old 06-12-2009, 01:18 PM
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is it hard to replace? do i need to remove the dash or anything? whats the part cost?
Old 06-14-2009, 06:43 AM
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Did you see my post on the link Buff posted for naioa?

Originally Posted by Corny40
I know what that is. I had the exact same thing happen to me. It was right after Hurricane Ike, so I wasn't able to post about it at the time. Sometimes, even after you turn off the car it goes off? right? Well anyway, it did to me. The problem is a temp actuator. Here's what my invoice said:

Left temp actuator out of range
D1812 temperature valve actuator replacement left side
part# 15844096
18551 left temp actuator clicking, setting B0408 code, actuator out of range. replaced left temp actuator with .3 hrs diag time


Hope you're still under warranty, from the looks of my invoice it was 2.8 hours of labor.

No idea what the part ran.
I didn't fix it myself. I was (am) still under warranty.




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