I have a 96 2+2 NA

I have a keyless entry on my Z but the driver side door won’t lock just the passenger

I’ve noticed if I’m in the car and I manually lock the driver side door the passenger automatically locks but if I lock the passenger side first the driver side doesn’t lock so I doubt it’s a issue with the keyless entry system and has something to do with the automatic door lock system on the driver side

Any one know how I can fix ?

Btw I do notice a sound when I lock the passenger side door it sounds like it’s coming from the backseat like it’s trying to lock the front door but something is stopping it I dunno

Also I have a 96 friend who said his driver side door does auto lock when he locks the passenger side manually

Need help if anyone knows or has ideas thx

Driver side actuator probably failed.