How do you replace serpentine belt on a 2007 Dodge Caliber?

To replace the serpentine belt on a 2007 Dodge Caliber, first, ensure the engine is off and cool. Locate the serpentine belt tensioner and use a wrench or socket to relieve tension on the belt. Remove the old belt, then route the new belt according to the diagram usually found on a sticker under the hood. Finally, release the tensioner to secure the new belt in place and double-check the routing before starting the engine.