2014 Impala LT Ambient Temp Sensor Location??? - Chevy Impala Forums
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post #1 of (permalink) Old 05-17-2017, 10:30 AM Thread Starter
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2014 Impala LT Ambient Temp Sensor Location???

Does anyone know where the ambient temp sensor is located? I just purchased my 2014 Impala LT (used) and the outside temp is showing -40 degrees and I keep getting warning message on dash saying possible ice on road but i'm in Houston and it's about 85 degrees now. (pictures would be great if possible)

Thanks in advance
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post #2 of (permalink) Old 05-17-2017, 10:41 AM
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Originally Posted by steven3181 View Post
Does anyone know where the ambient temp sensor is located? I just purchased my 2014 Impala LT (used) and the outside temp is showing -40 degrees and I keep getting warning message on dash saying possible ice on road but i'm in Houston and it's about 85 degrees now. (pictures would be great if possible)

Thanks in advance
I can't remember where it is off-hand, but there are a few good posts on the forum regarding this subject (include a procedure to "reset" the sensor by pressing a button combination on the HVAC control panel). Do a few searches for "ambient air sensor" and I'm sure you'll find them. If not, let me know and I'll see if I can find them.

I'm assuming that you're talking about a 2014 8th gen (old style) Impala (even though you posted in the 9th gen forum) - please clarify. If it is an 8th gen, I'll move the post to the appropriate forum. If it really is a 9th gen (newest style), then please ignore this post! :-)

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post #3 of (permalink) Old 05-17-2017, 01:31 PM Thread Starter
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I'm actually talking about the 9th generation (New body style). I haven't had any luck with this topic
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post #4 of (permalink) Old 05-17-2017, 01:32 PM Thread Starter
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Originally Posted by jtrosky View Post
I can't remember where it is off-hand, but there are a few good posts on the forum regarding this subject (include a procedure to "reset" the sensor by pressing a button combination on the HVAC control panel). Do a few searches for "ambient air sensor" and I'm sure you'll find them. If not, let me know and I'll see if I can find them.

I'm assuming that you're talking about a 2014 8th gen (old style) Impala (even though you posted in the 9th gen forum) - please clarify. If it is an 8th gen, I'll move the post to the appropriate forum. If it really is a 9th gen (newest style), then please ignore this post! :-)

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***I'm talking about the new body style (9th gen)
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post #5 of (permalink) Old 05-17-2017, 01:48 PM
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Crap - sorry about that - I was assuming (hoping!) that you were talking about the old style Impala. :-)

These are all about the 8th gens, but you may still find some useful info in them....

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post #6 of (permalink) Old 05-18-2017, 04:17 AM
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The ambient air sensor for the 9th generation Impala is located in front of the a/c condenser, on the radiator core support, passenger side You must remove the upper close out panel (black plastic with black plastic fasteners) to reach the sensor. It unplugs from a harness. Check the female connector on the harness to determine if there is corrosion. You may be able to clean the connectors with electrical contact cleaner and a small, soft bristle toothbrush - then add some dielectric grease and reconnect the sensor. If that does not work, you will have to replace the sensor (inexpensive - buy a GM one that will be calibrated correctly). GM also makes a replacement female connector pigtail if the current one is corroded badly.

The new sensor does not have to be reset. Do read owner's manual as the sensor does not display the actual temperature immediately, unless parked for longer than 4-5 hours. There are several conditions that must be met for the outside temperature to be displayed - so make sure you know those before you start the car and test the new sensor (or cleaned and reinstalled sensor).

Good luck. I have a 2014 Impala 2LTZ.
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post #7 of (permalink) Old 05-18-2017, 06:41 AM Thread Starter
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Originally Posted by 1999 White C5 Coupe View Post
The ambient air sensor for the 9th generation Impala is located in front of the a/c condenser, on the radiator core support, passenger side You must remove the upper close out panel (black plastic with black plastic fasteners) to reach the sensor. It unplugs from a harness. Check the female connector on the harness to determine if there is corrosion. You may be able to clean the connectors with electrical contact cleaner and a small, soft bristle toothbrush - then add some dielectric grease and reconnect the sensor. If that does not work, you will have to replace the sensor (inexpensive - buy a GM one that will be calibrated correctly). GM also makes a replacement female connector pigtail if the current one is corroded badly.

The new sensor does not have to be reset. Do read owner's manual as the sensor does not display the actual temperature immediately, unless parked for longer than 4-5 hours. There are several conditions that must be met for the outside temperature to be displayed - so make sure you know those before you start the car and test the new sensor (or cleaned and reinstalled sensor).

Good luck. I have a 2014 Impala 2LTZ.

Thanks a lot....I will get on it when I get off work this afternoon. Seeing that -40 outside temperature reading on my screen everyday is driving me crazy lol. I'll make sure to give an update when I am finished.
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post #8 of (permalink) Old 05-18-2017, 08:38 AM
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Steve, Open the hood and remove the cover above the radiator location. The sensor is in the front grill area. I has some front bumper damage a year ago and the body shot forgot to re attach the sensor. You get that -40 when it's either broken or not plugged in. After it's plugged in or replaced it takes driving a few miles for it to correct itself.
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post #9 of (permalink) Old 05-18-2017, 12:28 PM Thread Starter
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Steve, Open the hood and remove the cover above the radiator location. The sensor is in the front grill area. I has some front bumper damage a year ago and the body shot forgot to re attach the sensor. You get that -40 when it's either broken or not plugged in. After it's plugged in or replaced it takes driving a few miles for it to correct itself.
Ok within the next couple of hours I will get to it. I actually already removed the cover above the radiator but didn't see anything, but I'll take a more thorough look today.
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post #10 of (permalink) Old 05-19-2017, 05:36 AM Thread Starter
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Well, I'm kinda embarrassed to say but I still haven't found that damn sensor lol. Maybe I need to remove the grill??
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post #11 of (permalink) Old 05-19-2017, 10:03 AM
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Well, I'm kinda embarrassed to say but I still haven't found that damn sensor lol. Maybe I need to remove the grill??


I'll look at mine tonight when I get home and repost.
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post #12 of (permalink) Old 05-19-2017, 12:59 PM
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The ambient air sensor for the 9th generation Impala is located in front of the a/c condenser, on the radiator core support, passenger side You must remove the upper close out panel (black plastic with black plastic fasteners) to reach the sensor. It unplugs from a harness. Check the female connector on the harness to determine if there is corrosion. You may be able to clean the connectors with electrical contact cleaner and a small, soft bristle toothbrush - then add some dielectric grease and reconnect the sensor. If that does not work, you will have to replace the sensor (inexpensive - buy a GM one that will be calibrated correctly). GM also makes a replacement female connector pigtail if the current one is corroded badly.

The new sensor does not have to be reset. Do read owner's manual as the sensor does not display the actual temperature immediately, unless parked for longer than 4-5 hours. There are several conditions that must be met for the outside temperature to be displayed - so make sure you know those before you start the car and test the new sensor (or cleaned and reinstalled sensor).
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post #13 of (permalink) Old 05-20-2017, 11:03 AM
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Originally Posted by 1999 White C5 Coupe View Post
I'll look at mine tonight when I get home and repost.


Sorry for the delay - severe thunderstorms and power outages last night.

I have observed the ambient air sensor on a new Impala, when I saw a wrecked one with the front end removed.

I removed the upper radiator close-out panel on my 2014 Impala 2LTZ. There was not enough access to reach inside, in front of the a/c condenser on the passsenger side. It looks as though you will also have to remove the plastic filler panel (under the closeout panel, between the header panel and the radiator core support - numerous Torx screws and it surrounds the hood latch).

You may be able to reach up from underneath to access the sensor, or put the front end on ramps and reach up. The sensor is held to the support with one screw, and the sensor is black and unplugs from the harness (I have replaced the sensor on my Corvette....). I did not lay on the ground under mine to see if I could access it as I recently had surgery.

I hope this helps.
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post #14 of (permalink) Old 05-26-2017, 04:34 PM
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What did you determine?
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