NO heat no air movement

OK fellas it is starting to get cold and my 92 2600i has no heat or any air movement in the cab at all even on high or any settings. any ideas on what may be my problem or some ideas of what I can try. appreciate any help

Check your fuses first before you do anything. I've had that happen in some of my other vehicles.

If it's not that,maybe you have a faulty switch,or a bad ground,or maybe something has come undone back there for whatever reason.

If you do have to pull it apart,it's a pain in the ass.