Faulty temperature readings

[Patrickv2221]

My "Driver Information Center" is showing what think is an erroneous temperature reading, I believe it is indicating readings lower than they should be.
Is this due to a faulty ambient air sensor or, some other sensor?

 

[Fireduck69]

Any error message or codes set?
Assuming your temp gauge is reading low, it’s probably a thermostat stuck open. You will usually get a message “engine hot AC turned off” and temp gauge will drop to zero (or actually 100 as that’s the lowest reading).

 

[justdennis]

I just had the same thing happen to my car last week, code P0128, (temperature to low). I changed the thermostat and so far no more problems. I have only driven it a few times since but I think the thermostat being stuck open was the cause.

 

[Patrickv2221]

There are no error codes displayed because, this is not the engine temperature but the ambient air temperature as displaye on the Driver Information Center not the instrument panel.

 

[justdennis]

I didn't know ambient air temperature was on the DIC, on my car it is on the radio display next to the time.

 

[mickeytee]

Outside ait temp unit in the lower grill area and cheap. You can get them new from gm

 

[Patrickv2221]

Thanx to all respondents

 

[mickeytee]

Let us know what it involved so the next person will be helped. Thank

 

[Patrickv2221]

I have ordered the repair part. When I have it installed I'll report on results.

 

[Joe'sClassics]

My "Driver Information Center" is showing what think is an erroneous temperature reading, I believe it is indicating readings lower than they should be.
Is this due to a faulty ambient air sensor or, some other sensor?

I am having the same issue. My info center tells me it's minus 40 degrees this causes the AC not to work. I have replaced the ambient temperature sensor but it did not fix the problem. I also might add this is intermittent it last about 15-20 minutes then it will start climbing back up. Most of the time it reads 75 degrees.
This seems to be a fairly common occurrence someone out there must know the Fix .