Clicking noise from wall in right rear cargo area - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 02-08-2011, 10:00 AM
jlswine jlswine is offline
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2004 Chevy TrailBlazer LT EXT
Summit White Other 4X4
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Location: atlanta, ga
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Clicking noise from wall in right rear cargo area

My 04 TB EXT started clicking from behind the wall panel in the right rear cargo area and wouldn't stop no matter what AC/Heat setting I had. If the key is turned, it clicks. I was able to look through the vent in the wall panel and see that it is a black electric motor housing - I used a screwdriver to push out the power lead to get it to stop, and just stopped using the AC fans. The numbers I can read through the vent are 47210105 0406831 and under that is AH23012003. From what I can find online, this looks to be a faulty Actuator and a relatively easy replacement. Does anyone have any input on just how complicated this part is to replace, and is its failure indicative of any more sinister problem?

Thanks for any input you can give!
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Old 02-08-2011, 12:09 PM
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the roadie the roadie is offline
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2004 GMC Envoy SLT "Roadiemobile"
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Classic thing to fail after a battery swap or discharge. Just run a search on rear actuator or the part number.

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Old 02-08-2011, 12:22 PM
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SHILOW SHILOW is offline
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2003 Chevy TrailBlazer LTZ
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The actuators in the back are probably the easiest to replace just because they are pretty easy to get to. Takes around 30 mins. Do a search, there is alot of information on this here. There is a recalibration process that needs to be followed once the new actuator is installed.
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Old 02-08-2011, 12:25 PM
jlswine jlswine is offline
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2004 Chevy TrailBlazer LT EXT
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How difficult is it to replace?

Thanks for the response! The odd thing is that it started clicking as I was driving down the highway, about 80% of the way from Atlanta to Miami. I hadn't replaced the battery ever; it just started and wouldn't stop.

When replacing this one, do I need to replace both actuators or just the one making the clicking noise? Do you have any idea how complicated it is to get to and replace?
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Old 02-08-2011, 01:21 PM
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SHILOW SHILOW is offline
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2003 Chevy TrailBlazer LTZ
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I would replace just the one that is clicking. There are only two hex head screws that hold it in place. I was able to get to it without taking the panel completly off. You may have to align the gear by poping off the case of the actuator. You can find some directions for this with a search. You could probably do a search just on The Roadie's post and find everything you will ever need. He is Dr. Trailvoy.
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Old 02-08-2011, 01:27 PM
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Hehe. And sometimes cranky, too. (On folks who fail to do a simple search first.....)
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2004 tb ext, clicking in cargo area

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