2003 impala w/dual zone ac n heat, my heat works fine and all speeds 1-5 blow just fine even with ac. but ac blows hot air. what should i do?

Jeffery Lewis

• 329 Answers
• Posted on Jun 03, 2009

SOURCE: 2004 Chevy Silverado AC is blowing warm air on passenger side.

You have dual zones that are controlled by temperature actuators the passenger side has lost its memory or has gone bad you can put it in self programming by disconnecting the battery for ten minutes then hook it back up start the truck turn the temperature control on but do not touch any other controls let it go thru the self programming for about 6 to 7 minutes then select your temperature you want if it still does not work properly you may have a bad actuator or a bad connection at the actuator

SOURCE: 2006 chvy impala when idling dont blow hot air

1 Inspect Cooling System Mix Coolant level low or flow is restricted. 2 Inspect Thermostat Thermostat stuck closed 3 Inspect Heater Control Valve Leaking or defective heater control valve. here something to help u

Here to help Shaun

SOURCE: heating problem

my car is now fixed i bought an accuator from the dealer for around 54 dollars and replaced the driver side accuator by removing the panel below the steering wheel moved all the wires out of the way and it was held on by two screws( .5mm) took around 30- 45 mins. and now the heat is cranking on both sides the dealer said that it is a very common problem in these cars to bad gm is to cheap to put out a recall

SOURCE: AC Blows cold then hot

I had this happend to me on my 2004 2500 in july in S.C.I turned the key off and on 5-6 times and i have not had that problem again.

SOURCE: Impala has dual climate control. AC blows cold on

with a dual climate control system, it is imperative for a proper refrigerant charge to be maintained. the symptom you describe is a possible indicator of low charge on the system. the ac evaporator core is closest to the right side of vehicle thereby making air feel cooler on that side, on the left side of the vehicle the cooled air has farther to travel and warms up from cabin air before it discharged from the vents. this is the most probable issue for your vehicle...however if the charge is accurate, the issue would be more so in the air temperature doors which is located deep inside the dash...i hope this helps...good luck!