OK guys... looking for a bit of help here. I have a 05 Yukon XL Denali. As many other people, I am also having climate control / air conditioning problems. I can only get the air to blow through the defrost vents by the windshield no matter what vent setting the climate control panel is set to. This problem was first encountered about a year ago when I changed the battery in the vehicle. We actually got things working again by removing the climate control panel (below the radio) and unplugged and replugged the 2 harnesses. Bingo.. things started working again.
I recently put in an aftermarket double din Kenwood Nav system. In working through the install, I removed the negative battery lead multiple times, and sure enough the problem showed up again. (Blowing air through defrost vents only) I was able to fix it one time with the procedure I indicated above (unplug and replug the climate control harnesses), but I no longer can get that to work. I tried pulling the HVAC fuses as other posts have indicated, wait 10 seconds, and then turn the vehicle to ACC for about a minute. That didn't seem to work.
I read a bunch of posts about the actuator motors being bad, so I picked one up at an auto parts store. I didn't know which actuator was the issue. I started with the one under the passenger side dash (under the hush cover). This apparently was the wrong one
. I then found the other actuator (the correct one) under the drivers side dash up to the right of the gas pedal. I removed that actuator, and was able to manually turn the vent arm to change the vents that the air blows out. So.. for the time being, until I figure this out, the wife and 4 kids won't bake in the vehicle.
I noticed that even with the actuator removed from the vent assembly, when I changed the position of the climate control to defrost vents, top vents, lower vents, etc... the actuator did NOT move. I then tried plugging in the NEW actuator that I got from the auto parts store. Just like the existing actuators in BOTH locations, when the vehicle had power going to the HVAC system the actuator was moved from just below the lowest setting to the lowest setting, and then back BELOW the lowest setting. It seems to me that it's somehow not getting initialized correctly as both actuators "resting position" is slightly below the lowest position no matter what vent position setting the climate control is set to. I hope that makes sense.
I think I have convinced myself the actuators are not bad. Anyone agree, or think I'm crazy? So, I'm wondering if the consensus here is that the climate control panel is bad? Any way to verify this??? Is there another procedure for initializing the system? Thanks in advance for the assistance!!!
I recently put in an aftermarket double din Kenwood Nav system. In working through the install, I removed the negative battery lead multiple times, and sure enough the problem showed up again. (Blowing air through defrost vents only) I was able to fix it one time with the procedure I indicated above (unplug and replug the climate control harnesses), but I no longer can get that to work. I tried pulling the HVAC fuses as other posts have indicated, wait 10 seconds, and then turn the vehicle to ACC for about a minute. That didn't seem to work.
I read a bunch of posts about the actuator motors being bad, so I picked one up at an auto parts store. I didn't know which actuator was the issue. I started with the one under the passenger side dash (under the hush cover). This apparently was the wrong one
. I then found the other actuator (the correct one) under the drivers side dash up to the right of the gas pedal. I removed that actuator, and was able to manually turn the vent arm to change the vents that the air blows out. So.. for the time being, until I figure this out, the wife and 4 kids won't bake in the vehicle.I noticed that even with the actuator removed from the vent assembly, when I changed the position of the climate control to defrost vents, top vents, lower vents, etc... the actuator did NOT move. I then tried plugging in the NEW actuator that I got from the auto parts store. Just like the existing actuators in BOTH locations, when the vehicle had power going to the HVAC system the actuator was moved from just below the lowest setting to the lowest setting, and then back BELOW the lowest setting. It seems to me that it's somehow not getting initialized correctly as both actuators "resting position" is slightly below the lowest position no matter what vent position setting the climate control is set to. I hope that makes sense.
I think I have convinced myself the actuators are not bad. Anyone agree, or think I'm crazy? So, I'm wondering if the consensus here is that the climate control panel is bad? Any way to verify this??? Is there another procedure for initializing the system? Thanks in advance for the assistance!!!
