2020 3500 Ram air Suspension Issue

[Cummins67]

Good afternoon. I was towing my 5th wheel camper with a pin weight of about 2400lbs on a smooth road and heard a pop. Actually thought I blew a tire on camper. Pulled over and found no apparent issues. After getting home and unhooking, the next morning I was checking truck again and found that right air bag had no air pressure, left bag was tight. Took to dealer they said there was no problem found. Now the air compressor will fill both bags but right bad will be flat the next morning. When I have a load on the truck it will pump up bags and appears to hold. Any thoughts on what I can check. Dealer says no codes related to air suspension