My favorite speed on the Rolling Steel Tent's heater/air conditioner fan stopped working—probably because it was on all the time. The next speed up is too noisy and the next speed down doesn't move enough air. I figured I'd need to take the dash apart and replace the switch or switch module. Everything's a module these days. So I searched YouTube to see how big of a job that would be.
What luck! There was a video about my exact problem on almost my exact van. It turns out it's just a matter of replacing the fan speed resistor via the engine compartment. Woo! Easy! And a new fan speed resistor is only about twenty bucks. Excellent. There's a trip to an auto parts store in my future.