Heat blows on passenger side and rear but not driver side

This happens when the right or left temperature blend door actuator goes out. This guide can show you how a typical system works and where the actuators are located. I have included diagrams for your car below.

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

This could be a blend door issue if you have dual zone temperature control. If this is single zone then most likely the arm that connects the two doors has fallen off or broke.

Here s a guide that will help with this:

https://www.2carpros.com/articles/replace-blend-door-motor

Below you will see an illustration of this as well.