Every spring, I would (and still do) Jack it up and repack all the wheel bearings, rotate the tires while I have it up and the tires off. Inspect closely all the brakes and hardware, tires and wheels, springs and suspension and axles, look for any breaks or damage in the exposed wiring. Get up on the roof and hand scrub it with dish soap and a soft bristle scrub brush. While up on the roof, inspect all seems, and all caulking, recaulk anywhere that even has a dimple in it. Wash the outside of the camper with car wash soap, and a soft bristle brush, and wax with a spray wax. Inside, vacuum all the floors, use floor scrubber on carpets(unless not needed) and wash and wax vinyl floors with appropriate cleaners and wax. Wash all windows and screens inside and out,. Wipe down the inside walls and woodwork, usually ued murphys oil soap and water for this, but it depends on what the material is on your walls. If the weather is above freezing and looks to stay that way, I will sanitize the fresh water tank and run water through all the lines to check for any leaks, then try out all the systems, fridge(both gas and electric) hot water tank(gas and electric if installed) and anything else that you can think of. That way when you are ready to head out, all you have to do is load up the perishables, your clothes and enjoy.
03 Silverado cclb 3500 drw, D/A, Reese 22k hitch
07 Alfa SeeYa Gold 30RL,2 slides,power everything