Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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Is this cold air occuring with the temp set on hot?
Let me know so we can continue,thanks Pete.
Was the computer on the front dash for heat/ac operation replaced?
The rear is a slave to the front.If the temp reading inside is 170 all of the time and the temp sensors were replaced already this indicates the front ac/heater control unit needs replaced.If this front control is one that has AUTO settings for AUTO temp controls then it will need programmed by a GM dealer or authorized repair center after it is replaced.
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It does have to be programmed unfortunately to operate.It may not operate at all or properly until it is programmed but you can replace it yourself then have it programmed.Programming usually takes less then 15 minutes to have done.
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