I replaced the blower fan and associated resistor in our 2006 KJ yday. All proceeded smoothly until there was a rattle when switched to high followed by a bang and sound of debris flying through the duct system. Immediately switched it off, dropped out the fan revealing as suspected a partially destroyed fan blade. Pieces of the blades could be found in the box immediately adjacent but none had come through the vents. Not sure if all had been cleared but thinking anything close to the fan had been removed, I swapped the old fan blade onto the new motor, after confirming all was still functioning. This time all good for a bit longer but then again, whirr, bang, rattle and same resulting destroyed fan blade (more debris into the ducts )Two questions: how the heck am I going to get all those bits of fan blade out of the ducts (ideally without taking out the whole dash) and second, can it be the resistor rubbing up against the blade when set to high, it seems awful close. The blowers were both seated correctly and ran fine for a while before disintegrating. Another blower fan on the way and don’t want to destroy a third!