Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on GMC Yukon XL 1500

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

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Average mileage: 140,085 (60,000–215,000)
7 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2009
18 people reported this problem
9 people shared problem details
Rear heating vents only deliver cold air
2 people like thisFlag inappropiate
my yukon blows hot and cold at the same time. only in the front of vehicle driver side cold & passenger side hot.
1 person likes thisFlag inappropiate
AC on blowing hot air
When the air conditioning is on the driver side will start blowing hot.
Air-conditioning blows hot its full of freion.still.
when switching from heat to a/c the temp control is on 60 but there is hot air blowing out as if the heater is on.
rear a/c blows hot air even when air is on
I have to go to full hot to get heat...if I back off even a little, cold air blows out of the vents.
Acuator failed had replaced cost $600
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