2023 AT4X, A/C starts on high then about 12 seconds in cuts to low automatically.

[WhiteMike]

I’ve got a 2023 AT4X and when I start the truck up, I may already have the A/C blowing full speed and about 12-15 seconds in, it automatically turns to low on the fan speed.

 

I do not have it in auto mode, temperature setting is at “low”.  Recirculation is set to on.
 

It does this every single time. It has to be something minor but I can’t figure it out. Being in Texas it’s hotter than you know what. I Get in, turn AC up full blast and then 12 seconds later it turns down then I have to press the button to turn the fan speed back up . Only does it after starting the vehicle up.  
 

Anyone have any ideas?

 

Thx.

[silveradosid]

might be the battery sensor slowing it down after start up to let the battery charge back up

[superdashdad]

Something to do with your phone maybe?  Mine slows the fans down when I take a call and speeds them back up when the call ends.

[Jus Cruisin]

How about using auto mode. Turn the auto fan speed to high setting and skip recirculate unless you're in the Canadian smoke like us. 

[eppieguy]

It's an issue that has been discussed here, after the last update this issue started to happen to some of us. No fix yet that I know of, the way I get around it personally is hit the mute button on the steering wheel, the HVAC will start to blow normally and then hit the mute button again, only takes 2-5 seconds at most. 

[eclipse41986]

Same issue with my 2023 LT. Took it to the dealership and of course I got the usual "it functioned like it's supposed to and it's not throwing a code so there's nothing we can do." I've found switching it back to manual and then back to auto starts it back like it's supposed to.