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Username Post: Outside temp indicator        (Topic#356814)
Frequent Contributor
Posts: 1239

Loc: Tennessee
Reg: 12-06-10
06-13-19 04:50 PM - Post#2768403    

Can the outside ambient temperature dash indicator be calibrated? Mine is sometimes 6° too high.

Senior Member
Posts: 929
Loc: Calgary, Alberta, Canada
Reg: 11-04-02
06-14-19 06:56 AM - Post#2768435    
    In response to YOUNG57

I've never had a problem with mine, but on another board, someone dug up this info/procedure:

"To perform an instant update of the Ambient Temperature Sensor, simultaneously press and hold the Recirculation button and A/C button on the HVAC control head."

The dealer can also do this with their scan tool, but if I were you, I'd give the 'instant update' a try.

Also, make sure the sensor is in its proper location. Sometimes they get bumped / dislodged and wind up too close to the radiator or A/C condensor and they'll register that additional heat.

Of course, you may just have a faulty sensor. Checking RockAuto, it appears that they're only about $5 and are fairly easy to remove/replace.

Frequent Contributor
Posts: 1239

Loc: Tennessee
Reg: 12-06-10
06-14-19 07:01 PM - Post#2768482    
    In response to raceman6135

raceman6135 thanks for the good information, I'll try that.

"7th Year" Gold Supporting Member
Posts: 2964
Age: 34
Loc: Utica ny
Reg: 04-13-10
06-16-19 01:54 PM - Post#2768582    
    In response to YOUNG57

Unplug and inspect the plug.
It works off resistance, therefore any loss of connection would cause higher resistance than normal which would affect the temp reading

Old School GM fan FOREVER

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