Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Chevrolet Tahoe

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: 123,288 (13,400–250,000)
14 model years affected: 1999, 2000, 2001, 2002, more2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
136 people reported this problem
80 people shared problem details
The vents facing the driver blow out hot air when the air conditioner is on. Sometimes it goes back to cold and there have been times when I have to pull over to restart the vehicle. I just turned the heat on, and now cold air comes out then heater is on. Is this a recall problem?
47 people like thisFlag inappropiate
In AC mode, heat eventually comes out on drivers side. I had the actuator replaced by mechanic at a cost of $300.00 ($150 for the actuator and $150 for labor). New actuator worked fine for awhile now it's doing it again. Anyone have any suggestions or instructions on how to install new actuator?
35 people like thisFlag inappropiate
2005 tahoe. have noticed rear a/c blowing hot if it is on at the same time or before front a/c. have to turn all a/c off, turn on front, then back and it usually works. sometimes have to restart the vehicle to get it to work. just replaced the battery and fusible link cable between battery and alternator, now the passenger side is blowing hot. since we're at the 39th day in a row of 100+ outside, i don't need the heater. i've read other blogs and it seems to be either a mode selector motor or actuator door issue, but i haven't seen anything definitive. can anyone help, please!
24 people like thisFlag inappropiate
2001 Chevrolet Tahoe100,000
cant switch air to vents from def
16 people like thisFlag inappropiate
Driver/passenger air vents blow hot then cold when using A/C. Back to cold when you restart the vehicle.
13 people like thisFlag inappropiate
trying to get cold air thru the dash vents is a hit and miss deal. air will go thru the defrosters for the most part but in az. this takes a long time to get the inside cool. has electronic air front and rear .all air coming out is cold but just the wrong place
11 people like thisFlag inappropiate
late August the AC would switch to heat for a few minuets and then resume with the AC,. as summer became fall I disregarded the problem till the 1st hard frost when after 5 miles little heat
11 people like thisFlag inappropiate
2004 Chevrolet Tahoe100,000
AC blows hot. Have to turn off engine and turn back on and this seems to fix until next time.
8 people like thisFlag inappropiate
When the heat setting is on heat is only in the front the rear heat vents do not blow hot only cold even when the rear heat setting is on hot.
8 people like thisFlag inappropiate
when air condition is on hot air blows on drivers side some of the time.. If I turn the vehicle off it will reset it. Same thing happens sometimes on passenger side.
6 people like thisFlag inappropiate
The vents facing the driver blow out hot air when the air conditioner is on. Sometimes it goes back to cold and there have been times when I have to pull over to restart the vehicle
1 person likes thisFlag inappropiate
2005 Chevrolet Tahoe150,000
Ac ran super cold for 2 hour drive. Stopped to get food. Furnace out the front vents. Tried turning ac on and off no fix. Restarted truck and working fine again. Hope it holds
1 person likes thisFlag inappropiate
after dealing with the on off hot cold issue for a couple of years it finally went all hot and no cold. I had the actuator replace parts and labor was right at $800.
1 person likes thisFlag inappropiate
Heat on drivers side while running ac not all the time. Now at 180,000. while running heat it blows cold air on drivers side it will not change.
1 person likes thisFlag inappropiate
Driver and passenger do not heat evenly. Have not fixed yet
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2004 Chevrolet Tahoe120,000
Heating and A/C does not come on till 3 on the dial
1 person likes thisFlag inappropiate
2003 Chevrolet Tahoe115,000
Ac blows heat. Shop said air blend actuator needs to be replaced. What is fair price for shop to fix?
2003 Chevrolet Tahoe100,000
Drivers side AC blows extremely hot air when the AC is on. Based off a YouTube entry I pulled out AC fuses and waited a few hours before putting them back in... Blow cool air for about 10 mins then turned hot again. Based on another YouTube entry I will try to replace the drivers side actuator and see if that works. ?is the driver side actuator a different part from the passenger side actuator?
1999 Chevrolet Tahoe129,000
Vents on driver side blow hot while passenger side is cold. Restarting engine solves the problem. Sometimes corrects itself after 2-3 minutes.
2005 Chevrolet Tahoe207,012
Hot air blowing from driver side vents. Cold air coming from passenger side.
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