Malibu features

I recently bought a 2001 Malibu, and I am trying to figure out all the features. I want to know if the car has keyless entry already installed so I can just buy a replacement remote, so I checked the RPO codes but didn't get too far. Is the standard keyless entry code AU0? I tried searching online for all the codes, but there are still some listed in my car that I was unable to find.

Thanks for any help.

-Emily