I have a 2016 Dodge Grand Caravan R/T and the blower motor will not increase its speed. This happened suddenly with no warning. No weird sounds, no gradually getting slower, just stuck on the lowest setting. I have tested the blower motor, it works(hooked it up to a power supply and she hummed. Replaced the blower motor resistor, nothing. Took apart the A/C control panel and look at the control board and nothing was melted/disconnected, etc. The rear A/C continues to work and they are able to be used on the same switch. Any ideas what else may be going on?