This is not unusual.I don't know how it is with RV lock which we have on ours how, but with our other 5th wheels with the regular lock there were just so many lock numbers and most dealers had a set that would cover just about all the campers. GM used to be the same way. I know I had an olds, and it's key would open the cars of a couple of my friends who had chevys. The storage compartment situation use to be worse. Most of them used the same key. This being said, in 11 years of full timeing, and many years of camping before that, I have never had anybody get into my camper or storage area.
Roger & Cheryl Full Time since 2002, RVing since 1975 2008 Chevy 3500 Crew Cab Dually, 2012 RW 36RL