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Chevy TrailBlazer Climate Control Questions

78 messages,  Last post on Dec 02, 2009 at 7:50 PM

You are in the Chevrolet TrailBlazer Forum. Your Hosts are steve_ & tidester

What is this discussion about? Chevrolet TrailBlazer, Heating / Cooling, SUV


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#47 of 78
ambient outside temp. sensor by aopimer
Jun 24, 2008 (11:08 am)
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My trailblazer is doing the same thing. Do you know the part #? Is this something that has to be purchased through a chevy dealer?
#48 of 78
ambient sensor by aopimer
Jun 24, 2008 (5:02 pm)
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Do you know the part number of this sensor? It is way too hot to be dealing with no a/c. Thanks.
#49 of 78
Re: ambient sensor [aopimer] by jerrcrib
Jun 25, 2008 (3:06 am)
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Replying to: aopimer (Jun 24, 2008 5:02 pm)

no I do not know the # I have not had to change mine
#50 of 78
ambient outside temp. sensor by aopimer
Jun 27, 2008 (12:00 pm)
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I've replaced the ambient sensor, but it's still reading in the 40's & 50's when it's 90 degrees outside. Any ideas? Please help!
#52 of 78
Re: ambient outside temp. sensor [aopimer] by james107
Jul 19, 2008 (1:08 pm)
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Replying to: aopimer (Jun 27, 2008 12:00 pm)

Found a fix yet?? I have the same issue with my 02 Trailblazer. Replaced the sensor, still reads at 50 degrees. One odd thing, while going to get the new sensor, I just left old one hang, and it worked for about 20 minutes then nothing again.... Even after new one put in, still nothing.
Let me know if you found the cure, drop me an email even at jimmatyaszoominternet.net
 
Thanks. Jim
#53 of 78
Re: ambient outside temp. sensor [james107] by aopimer
Jul 19, 2008 (4:08 pm)
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Replying to: james107 (Jul 19, 2008 1:08 pm)

Mine was working off and on for a few months. I finally bought the new sensor. When I replaced the sensor, nothing changed for about 1 1/2 days. It still continued reading 50 degrees and sometimes lower. After that, it has worked without a problem. I don't know if the computer had to reset, but it works now.
#54 of 78
Re: ambient outside temp. sensor [aopimer] by james107
Jul 20, 2008 (7:10 am)
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Replying to: aopimer (Jul 19, 2008 4:08 pm)

Thanks much for the info. I put the new one in, but didn't wait very long for results, and took it back out an returned it, as was 22 bucks, but am going back an get it, and plug it in and give it a chance.
 
Thanks again, jim in Ohio.
#55 of 78
Re: ambient outside temp. sensor [james107] by burdawg
Jul 21, 2008 (5:47 am)
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Replying to: james107 (Jul 20, 2008 7:10 am)

That sensor is nothing more than a thermister. Consequently any resistance in the contacts in the connector will affect it's accuracy. Make sure there's no corrosion, dirt or other contaminents in the connector.
#56 of 78
Re: ambient outside temp. sensor [burdawg] by james107
Jul 21, 2008 (6:02 am)
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Replying to: burdawg (Jul 21, 2008 5:47 am)

I figured it must be some sort of variable resistor, and am guessing it is accross the ground line, thus do not see power at the connector.
I did spray it with contact cleaner, but am going to double check again when i get the new part, which is tomorrow, takes 3 days to order an get it in at Auto Zone.
 
Thanks Jim, Ohio

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