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Heat Only Blows On 90 (Cold Air Otherwise)

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12 hours ago, Danerado said:

I'm having the same issue, only blows hot on 90, it looks like the temp probe is in the rear view mirror next to the onstar button. 

Temperature sensor is in an assembly called the aspirator; it's behind the grille in the headliner above the driver's head.  Got a little fan in there blows cabin air across a temperature sensor.


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