I removed both basket guides, removed the ice cube maker then removed the back wall panel, all only taking around 10 min. This gave me access to the fan, removed 2 more screws, disconnected 3 wires, all with connectors, then went in reverse to install new fan. 1/4" nut driver and a pair of needle nose pliers is all you need. The pliers are to remove the plastic wire keepers on the fan.