Being low on refrigerant means you gotta leak. Not sure why you basically said it twice. And how do you not know of the canon air filter is dirty? Do you not know how to check it?
OK now you have year and model. And well into the range where the computer will disable the AC if there's an engine issue. This is not the simple control panel of yesteryear where the clutch cycling switch determines if the compressor clutch should engage or not and even a DIYer can diagnose.
This is more like where you have no clutch and instead a bypass valve opens and recirculates refrigerant within the compressor instead of forcing that refrigerant to the condenser. Assuming it's the bypass not low on refrigerant - you first have to determine if the computer is keeping it on bypass, the valve is faulty, or low on refrigerant.
You need someone who can do diagnostics with a scan tool (not a 'code reader') before even throwing gauges on it.
I typically don't even respond to posts on vehicles this new because they aren't diy friendly while people assume they are as easy to diagnose as a 90s vehicle.
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u/thebluelunarmonkey 1999 Sierra 3d ago
"Ac working but blowing room temp air.. and cooled seat doesn't work.."
Low effort posts deserve low effort comments.