This seems to be the norm for Ram for some reason and not just with trucks like yours but all the Rams. I needed a new shock under warranty and even that was backordered. Crazy. I have a friend with a GMC and he has had a few warranty issues, including one complicated one with the DEF system. The local GMC dealer gets him in right away and always either has the parts in stock or can get them within the week. Of course, I don't really like his truck compared to my Ram so I just keep hoping that I don't have an issue that puts me in the "without a truck for months" club.
I do have the two open recalls on mine, the transmission dipstick and vent, and the grid heater relay. I have called many times to see about getting it done and they always say no parts available for me. I am sure they have fixed truck on their lot so they can sell them. But for a customer with a 2021 that I did not buy from them, they will not do the recalls. This may be a problem just with my big chain dealer as others in different locations and with different dealers have had the recalls done, but who knows. I am hoping that by next March 2024 when I need fuel filters and an oil change, maybe they will be able to do the recalls at the same time. Until then, I just give up trying to get them done. Disconnected the heater relay and have not had an issue with the transmission blowing fluid out the tube so maybe I'll be fine for the long term.