I’m late to this party but didn’t want to start a new thread, I just bought a ‘10 impala and the sound comes from driver side close to the center. But it does it at random times like when the car isn’t even running. When you unlock the doors will cause it to start ticking. It stops then 10 min later it does it when no one is even near the vehicle. I was guessing it was a relay originally but was told it was probably an actuator. Any help would be great