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Hello, so my son's 97 Chevy blows hot air all the time even when on A/C. The clutch engages, system charged, new controller, new actuator, blower motor fine and cleaned. What to look at next, electrical issue perhaps????

HELP....
 

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Temperature blend door or actuator or both are messing up. Unfortunately, it’s up against the firewall behind the glove box.
 

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1st, make sure the AC works, you should be able to remove the blower motor and get you hand up by the evaporator.
If it's cold, your problem, as çowboy suggests, is with the doors and flaps.
 
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