Anyone know why the blower control for my air conditioning is stuck on high?? The off, low, mid & high switch has no effect on the air at all. Doesn't matter if it is in heat or AC mode the blower is stuck on high. ANy ideas?

 

Interesting. Does it reset itself when you disconnect the batteries?

 

Haven't tried it yet....I'll let you know what happens

 

I meant to ask you about this when I had you on the phone yesterday. Slipped my mind.

The only time I've had something similar happen is when the blower in mom's Navigator stuck on high after three days of torrential rain. It even stayed on with the vehicle shut off and keys removed. I had to disco the battery to get it off and when I reset it everything was back to normal.

 

Good chance the blower motor resistor (or it's plug has melted down and is shorting across all terminals inside the connector