No matter where my temp setting is my vents are blowing hot air. Even turned my a/c on and it's still blowing hot air.
HELP ME!!!!!!!

Also....my defrost fan won't engage. All air is coming out front vents. Can' defrost my front wi ndshield

 

you will need a full function scan tool to check for codes set in the hvac module. this is the computer that controls temp and mode door functions.
the computer controls the movement of actuators that move the temp blend and airflow mode doors. did both problems happen at the same time?

 

I noticed the front windshield defrost not working about 2 weeks ago but only noticed the heat issue yesterday.