All of a sudden my AC is reversed. The control knob when it's supposed to be off is on (cold air blows) and when you turn it on high it's off. It does not blow air in between the settings. Also when driving it sometimes turns completely off, I am at a loss and need help please.

07 Hhr LS

 

Welcome to the site.

Sounds like a common case of a fan switch failure. An easy 10 minute job to replace the switch.

 

Thanks, I curb checked yesterday so after that it didn't work I didn't know if it would be the resister or I knocked something loose but I'll look at that first