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Discussion Starter #1
Hey all, does anybody know how to enable the outdoor temperature? After I had my vehicle serviced at a Chevy dealer, the thermostat no longer works, it instead displays “- - - °F”.
 

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Takes a day or two to re-calibrate. If not, check the sensor location on your intake; make sure it's plugged in.
 

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When I bought my Impala a few years ago (2008) the AC control unit was faulty, so I had it replaced. Immediately after that, the ambient temperature readout, which was working fine before, read "---F" like yours. I thought it just needed recalibrating or resetting, so I left it for a day or two. Didn't come back. Took it back to the dealer and it turns out that the new AC control unit had an updated firmware or something, and the ambient air temperature sensor didn't play nice with it. The dealer had to use their Tech 2 to update the software for the ambient air temperature sensor, and it came back on immediately.

Now, I don't know what work was done when your dealer serviced your 2011, but I'm willing to bet it's one of the following possibilities. Either A) it needs a software update, like mine or B) someone left something disconnected. Maybe C) the ambient air temperature sensor stopped working, but if it was working before it went to the dealer then I doubt that is what happened.

To "reset" the ambient air temperature sensor, press and hold the AC and re-circulation button simultaneously for about 3 to 5 seconds. If that does nothing, then I'd call your dealer and tell them to fix it.

Hope this helps.
 

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Discussion Starter #4
I had my A/C/Heat terminal replaced a couple of months ago due to a fried wire, so this must be it. I will take it to the dealer and see if they can update! Thanks!

When I bought my Impala a few years ago (2008) the AC control unit was faulty, so I had it replaced. Immediately after that, the ambient temperature readout, which was working fine before, read "---F" like yours. I thought it just needed recalibrating or resetting, so I left it for a day or two. Didn't come back. Took it back to the dealer and it turns out that the new AC control unit had an updated firmware or something, and the ambient air temperature sensor didn't play nice with it. The dealer had to use their Tech 2 to update the software for the ambient air temperature sensor, and it came back on immediately.

Now, I don't know what work was done when your dealer serviced your 2011, but I'm willing to bet it's one of the following possibilities. Either A) it needs a software update, like mine or B) someone left something disconnected. Maybe C) the ambient air temperature sensor stopped working, but if it was working before it went to the dealer then I doubt that is what happened.

To "reset" the ambient air temperature sensor, press and hold the AC and re-circulation button simultaneously for about 3 to 5 seconds. If that does nothing, then I'd call your dealer and tell them to fix it.

Hope this helps.
 
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