We have had similar issues. Sometimes the door doesn't want to unlatch. I had the same issue with one of my basement doors just this weekend. I hit the latching mechanism with some WD-40 and all was well again. I sprayed the coach door mechanism as well. The latch open much easier now.
I do have to slam the door pretty hard to be able to throw the deadbolt when we drive. This is partly my own doing. Unlike Lt Dan, I added rubber washers to my Door bumpers to keep the screen door from squeaking an rattling while we are driving. It was very noisy until I added the washers. Sometimes, it's tough to get the deadbolt latched. I also have to keep an eye on the screws under the trim that hold the door frame to the coach. They like to vibrate and back out a bit.
2015 Chevy Colorado