Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Cadillac Escalade

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

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Average mileage: 110,362 (28,000–200,000)
10 model years affected: 1999, 2000, 2002, 2003, more2004, 2005, 2006, 2007, 2008, 2009
60 people reported this problem
36 people shared problem details
when ac on-- get heat on drivers side and cool on passger's side
with a/c on it will switch to heating on drivers side only i have to stop, turn off and restart. may have to do 1 or 2 times
Fan only blows cold air in the rear when heat in on.
While driving with the airconditioning on, suddenly the front air ducks blow extremely hot air. Must turn off the vehicle, then restart for the problem to right itself. According to the posts I've been reading here and on other sites it sounds like a faulty blend door actuator also known as air flap actuator.
must be set to 90 to get heat to the front. rear heat works at intervals of seldom to none
Driver side heat, passenger side cold AC. Reviewing fix options now.
front & rear a/c blowing warm air clutch cycleing, short cycleing switch,add refrigerant, the only line that feels cold is the liquid line entering the evaporator and that is with the accumulator switch shorted.
Blow hot air driver side, but cool air every where else
Heater was coming on in the summer with the air blowing now winter heater will not come on at all.
Believe problem to be in the lower actuator. During AC season, passenger side upper and lower vents randomly blow extremely hot air - unbearable for the passenger. Drivers side and rear AC works fine when this happens. I have not found a solution yet other than the $1200 the dealer said would cost to fix.
intermitt loss of heat only on pass side.
The heating in the front had to be on 90 to get any heat and if you put it on 89 it gets cold
Passengers side has intermittent issue when A/C on sometimes heat on passenger side only
If your actuator is blowing hot or cold air it is probably not broken...just out of sync. A year and a half of hot air blowing out of the drivers vent from time to time. Cutting off and starting the engine at a traffic light temporarily fixed it. Finally it was happening all the time so I bought a new actuator from Advance Auto for $43.00. I unplugged the old actuator and was waiting till the next day to install the new one. Had to go to store so plugged old one back in and the cold air started blowing and hasn't blown hot air since. By unplugging power to the old actuator must have made the computer reset it. Returned the new actuator for a refund and it's been months now and no actuator failure. If that didn't work you will need to relearn the a/c actuator into position. Try to relearn your actuator by turning your A/C system to the highest blower setting with cold air for 5 minutes, then dial the heat to hot for five minutes. This sometimes resets the actuator when there is actually nothing wrong with it in the first place except that it's out of sync. Try this before you buy. It's a simple fix if you need to change it. Lot's of youtube instructions.
Ocassionally, A/C blows hot on driver's side, cold on passenger and all rear vents. Cycling through the ven positions (dash, foot, combo, defrost...) sometimes cures the problem. Vent baffles or doors can be heard operating. Today, that fix stopped working...
The moter will come on, but no air comes out, but when it does come some times my side blows hot an the passenger side will blow cold
need to change heat actuator doors.
Driver side A/C blows HOT air while rest of SUV runs cold. Has happened intermittently and just started blowing hot again.
My drivers side air goes to full hot randomly. Sometimes a restart will fix the situation for a few minutes. I ended up doing a YouTube search on how to fix the "blend door actuator" or "mode select door" and found how to change it. Mine happened to be the easy one located on the passenger side. Due to high cost I just took the actuator apart and cleaned it with acetone and it worked great for several thousand miles. Still looking to replace it, when money allows but it's a decent fix in a pinch.
heat comes out pass side when ac is on. does fine for a time then blows hot. can pull over and turn car off, back to normal.
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