Problems with ac

I have an issue with my account It only works on high. I have changed the resistor but it's still happening any ideas

 

Welcome aboard!

It might not be the resistor. Try disconnecting the electrical plug just beneath the resistor. Take a close look around where the contacts lie. Does the plastic or terminals look discolored/burned? If so there lies your problem as the contacts are weak creating high resistance and the fan is defaulting to high. There is a kit mad by AC Delco (our entire HVAC system is a General Motors special) and the kit contains larger AWG wires and a better connector that can be spliced in.

 

I'll take a look and see thank you

 

Well??

 

I haven't had the time to do so yet