2007 dodge caliber how do you replace the idler pulley belt?

To replace the idler pulley belt on a 2007 Dodge Caliber, first, ensure the engine is off and cool. Remove the serpentine belt by using a wrench to relieve tension on the tensioner pulley, then slide the belt off the idler pulley. Next, unbolt the idler pulley from its mounting bracket, install the new pulley, and reattach it with the bolts. Finally, route the new serpentine belt back onto the pulleys according to the belt routing diagram and release the tensioner to apply tension to the belt.