AC fan

[Stuart]

My 2023 AT$HD fan runs full when I get in but when I get a call it
turns to a low setting so you can hear. Pretty cool feature except when the truck is 125 inside from sitting in the sun.

 

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[jafo2358]

Anyone having issues with the fan making noise when turning the AC on and off?

 

[adeerchaser]

Same here- in auto blows hard and goes to low before outta garage. Same in manual mode. Mine worked perfect until the last “update” I got about 2weeks ago. Dumbass GM techs and their updates.

 

[Trenn]

23 sierra at4. Same thing, among other problems. Never hated a vehicle more than this thing

 

[Stuart]

23 sierra at4. Same thing, among other problems. Never hated a vehicle more than this thing

2023 AT4 HD, never loved a truck more.

 

[Bpamgat4]

Just noticed this issue myself, but with a different twist. Before the truck gets warmed up it will surge up and down the blower speed on its own when set to auto. The first 10 minutes it will do it and then seems to stop, but also I don’t think my recirculate works properly as when I switch it on it still pulls fresh air from outside and I can hear blend doors clapping when coming to a stop or accelerating from a stop for the first 10 minutes as well. Plan to take into the dealer to have other things looked at and prepared to hear we couldn’t replicate or operating as expected. Anyone have any luck or further insight?

 

[jafo2358]

Just noticed this issue myself, but with a different twist. Before the truck gets warmed up it will surge up and down the blower speed on its own when set to auto. The first 10 minutes it will do it and then seems to stop, but also I don’t think my recirculate works properly as when I switch it on it still pulls fresh air from outside and I can hear blend doors clapping when coming to a stop or accelerating from a stop for the first 10 minutes as well. Plan to take into the dealer to have other things looked at and prepared to hear we couldn’t replicate or operating as expected. Anyone have any luck or further insight?

GM. That's exactly the response I received from the Service Rep after I had it looked at the dealership. Could not replicate.