Just recently purchased a 2017 Grand Caravan GT. Noticed that the passenger side sliding door will only lock with the manual switch on the door. Using the fob or driver door controls does not lock the door. All other doors lock using these methods. Will this require a new actuator? The vehicle is still under factory warranty - anyone know if this is covered?

It could be the actuator or it could be the wiring for the actuator.

As to whether or not it’s under warranty is a different story. Being that it’s new(ish) I think it would be, but it depends on what coverage it had on the original date of purchase.

Your best option is going to be either calling the customer service number listed on the warranty or the dealership you purchased it from. They’re supposed to check all functions during a pre-sale inspection but that doesn’t necessarily mean they did.