Air conditioning system on yukon 2022 +

[JLMBT]

So GM DID A SOFTWARE UPDATE FEW WEEKS AGO, I AM NOT SURE IF THIS IS THE SAME FOR CHEVROLET, FOR SOME REASON, WHEN YOU INITIALLY START THE VEHICLE THE FRONT AC VENTS START BLOWING HIGH THEN GO LOW, WHILE AT THE SAME TIME THE REAR CONTINUE TO BLOW ON AUTO HIGH UNTIL THE VEHICLE CABIN AIR REACHES ITS OPTIMUM CLIMATE INSIDE. Now, what I noticed is whenever I turn the knob to increase the blower to the front vents, then press AUTO AC then it does what its suppose to and now the AC is equalized from front to back in how it should be. What is going on?

 

[WalleyeMikeIII]

Discussed at length here. Net, known big..no known fix yet.

OTA Update GM N22-238206 HVAC Quirk

Installed this on OTA on 5/19/23 in my 2022 Tahoe LT. Ever since installing, when I start up, the blower goes on high (it is pretty hot here already). That is expected with the system in "Auto". Before I can get out of the garage, the front blower goes very low, the rear blower is running at...

www.tahoeyukonforum.com

 

[Steve C]

So GM DID A SOFTWARE UPDATE FEW WEEKS AGO, I AM NOT SURE IF THIS IS THE SAME FOR CHEVROLET, FOR SOME REASON, WHEN YOU INITIALLY START THE VEHICLE THE FRONT AC VENTS START BLOWING HIGH THEN GO LOW, WHILE AT THE SAME TIME THE REAR CONTINUE TO BLOW ON AUTO HIGH UNTIL THE VEHICLE CABIN AIR REACHES ITS OPTIMUM CLIMATE INSIDE. Now, what I noticed is whenever I turn the knob to increase the blower to the front vents, then press AUTO AC then it does what its suppose to and now the AC is equalized from front to back in how it should be. What is going on?

Well, if it's any consolation, I have the exact same problem!