Warning I got with my remote when the battery was bad is it didn't work. The original one had no brand name on it and was made in India. Hardly lasted a year, but put in a Duracell, still good after close to three years now.
Its a good idea to try your key every now and then. 04 Cavalier had remote entry, was at a lake and accidentally dropped my remote in the water, good thing it floats. But it didn't work, tried the drivers door, frozen solid, any more force would have broken the key. Same thing with the passenger door, also frozen. But the trunk did work, could drop the rear seats from the trunk, was a darn tight fit, but was able to crawl up and unlock a door.
Now if this happened with the Cruze, would have been dead meat. Also leave my cell phone in the car, they don't like water.
Next day, I removed the door panels, not bad, used screws, removed the locks, brass tumblers were green and really stuck, cleaned and lubricated them. Then the passenger side door and the trunk as well, was kind of sticky.
Trying to be optimistic that is getting hard to do, least with the Cruze, only have one lock to clean and where is that plastic pry bar?