How do you change a fan belt on 2003 Geo Tracker?

To change the fan belt on a 2003 Geo Tracker, first, disconnect the negative battery terminal for safety. Then, locate the belt tensioner and use a wrench to relieve tension on the belt. Remove the old belt from the pulleys and install the new belt, ensuring it follows the correct routing. Finally, release the tensioner to tighten the belt and reconnect the battery terminal.