I took mine out once to clean the flue and never want to go through that again.
The bulkhead panel between the fridge and credenza has to come out first, which will require some disassembly of the credenza to access all the screws.
Part of the cabinetry above the fridge will also have to be disassembled. If you have a regular roof locker there, that might be different.
Some disassembly of the pantry cabinet on the other side of the fridge also needs to be done, and in some cases, holes need to be drilled blindly, in order to access screws on that side that hold the fridge to it's mounting brackets on that side.
You will need to unplug it and disconnect the gas, which are super easy to do at this point.
Once it is time to pull the fridge, put something down on the floor to protect it, such as a sheet of heavy cardboard, or better yet plywood. Then get someone to help you because that beast is heavy.
Just to put in my two cents regarding replacement with an electric fridge, I have a Dometic RM100 and if mine ever fails, my plan is to replace the cooling unit with a remanufactured one. In effect repairing and keeping the same fridge.
The design of the trailer has cabinetry basically built around and attached to the fridge, holding everything in place. To get any other fridge in that space and have it look good might require fabricating new mounting brackets, drilling holes in the sides of the new fridge (voiding the warranty for sure) in order to get the cabinetry back together, and maybe having to make some custom trim pieces to fill any gaps for the sake of making it look like a factory installation.
If a factory look is not important to you, and I will admit to being obsessive about that, and your trailer is parked for long terms at a place with electric hookup, you might be okay finding some dorm room fridge that will fit in that spot. Might be best to take some measurements first before pulling the fridge and find one that will be a good fit.
When life gives you lemons, don't make lemonade. Go get the oranges that you really want.