When I turn on my heater nothing happens...even on the 5 setting

Check your fluid level first off. If your fluid level has become too low, then fill it. On the top of the tube leading to your thermostat housing, there is a bleeder screw, open that up to release all of the air. You'll know, steam comes out first and then you should get coolant out. When you see fluid, close the screw and fill your raditator the rest of the way. If that does not solve the issue, then replace the thermostat. That's where i would start. Send me a post and let me know if that was it, I have the same vehicle and may be able to help you if that was not the issue..Good luck