I just need to know where it is. My heater doesnt work so I'm going to replace it. If there is anything else I should do before to test it let me know. Also if there are any special instructions for replacing it that I need to know. Thanks

 

Have you checked the fuse?

 

The fuses are known to melt the fusebox.
Also the motors are known to go bad.

 

You got a make and model? It's usually in the passenger side dash. It involves removing the bottom panel and pulling out the glove box. I don't really have any tips about the execution of the replacement though.

 

Its a 30 min job. Under the passenger side dash. Make sure you get the right connecters.