Researched fan problem on Durango, figured I'd start with the switch, trying to figure out how to get it out, found thread on same problem, Dodge tech said it's the fan resistor, common problem on those. $10 part, it's on the way. Checked and it's an easy fix, 2 screws on passenger's side floorboard, has been replaced before. Original wiring harness is 14 gauge wire, smokes the wire an inch or two back into the harness when it fries, so they come with 6 inches of harness to cut back and replace that. 12 gauge wire on those, and they're all green wires, so it's been replaced and should be a simple 2 screws unplug and plug new part in repair.
However... old man said brakes went out on his 06 Chevy 3500, mechanic is coming out in the morning to fix that, I get to assist him. Little fart only has one arm, but he's a pretty decent mechanic regardless. Amazes me at the things he does accomplish. Then I took the 2012 3500 to lunch and mud in the rims was shaking it pretty good on the way back to the office, so I decided to wash the rims out, and noticed the rear rotors are a little chewed up on it, started looking closer, and we got 2 of them to replace brakes on all 4 wheels. Yee Haa!!!