2002 Saturn L100 Car dashboard lights flickering

If ur door lock is unlocking by itself and ur dash lights are flashing then u probably have a bad body control module. Which is the computer for ur alarm keyless entry inside lights alot of things. When the go bad they usually have stuff like the gas Gauge will read empty keyless entry and door locks inop inside lights inop or will flash won't be able to read codes from the body control module. Also it will cause the car to just not start.U will have to have someone look at it to diagnose it for sure. And when it's replaced it will hav to be programed so everything works and the car will start. Best place to go is the dealer they have the equipment to program it and know what to look for when u have a bad body control module. It sounds like one though I have seen alot of. Bad ones. Let me know what u find and how it goes.