How do you replace a heater core on Hyundai tiburon 2003. how the dash board come out and Is the AC's need to be drained or not?

Oh, dude, replacing a heater core on a Hyundai Tiburon 2003 involves removing the dashboard, which is like a fun puzzle but way less enjoyable. The AC system does need to be drained before you can access the heater core, but hey, it's just a little extra step to make sure you don't get a surprise shower of refrigerant. Just make sure to follow the proper steps and maybe have a cold one ready for when you're done.