ive got a 2006 jeep commander 3.7. the blower motor works intermittently. it will run for a while then cut out, then back on. when it cuts out you can hear a faint whine from the dash area, like some small electric motor trying to move. but only for a minute or two. there is no set time that it will turn back on. however it will work on high setting all the time. im going to check the wiring, but i dont think its the resistor pack. thanks all!