Front heat does not work but rear heat does?

So, when you say heat do you mean air does not blow or the air blows but it is not warm? If the air is not warm I would change out the temperature blend door actuator which this guide can show you. Check out the images below for your car.

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

this guide can help as well

https://www.2carpros.com/articles/car-heater-not-working

If it is the blower motor not working here is the blower motor wiring diagrams so you can see how it works. Check out the images (below). Let us know if you need anything else.