I have a 2019 1500 5th gen Limited. Loads of issues. My AC puts out 55 degrees on the driver side and 43 degrees on the passenger side. Two dealers checked it and said it was normal. One mechanic told me to point the passenger vents toward me as a remedy. Called Ram today and filed a complaint. I told her fat people don't like to be hot. This is a deal breaker for me. I am seriously thinking about taking a trip to Carmax. It's a shame because there some really nice things about this truck. I just wish they would get serious about quality control.
There’s a non-invasive hack out there for this which I found on another forum. The folks on that forum have determined the AC performance is not super great because there’s too much coolant flow through the heater core when using the AC, so the AC is trying, but it is being hindered by the warm heater core.
The hack is to restrict the flow through the heater core by one means or another.
Heres the (very long) thread if you’d like to peruse. I wasn’t too keen on installing the valve the OP used, so I opted for
these $8 fluid line clamps from Harbor Freight. Takes two seconds to install and makes an immediate difference in the temps. Just remember to remove the clamp in the fall or you’re going to have a cold winter!
Edit: the didn’t realize the url is starred out.. 5thgenrams(dot)com is the domain.