How to replace timing belt on a 2003 chevy tracker

Open the hood and locate the accessory belt routing diagram that is stamped to the top flat surface of the radiator shroud. Use the routing diagram to properly route the new belt around each accessory pulley.
Look on the front of the engine between the alternator and the power steering pump and locate the automatic belt tensioner. Use the pulley that is attached to the end of the tensioner to loosen the tension from the belt.
Position a breaker bar and a 14 mm socket onto the bolt head in the middle of the tensioner pulley. Turn the breaker bar clockwise to loosen the tension from the belt. Slide the belt off of the tensioner pulley and slowly release the breaker bar.
Slide the belt out from around all of the engine accessory pulleys. Pull the belt around each of the fan blades and up out of the engine compartment.
Slide the new belt around each of the fan blades and around each of the accessory pulleys as directed by the belt routing diagram.
Turn the tensioner clockwise with the breaker bar and the 14 mm socket again. Slide the belt around the tensioner pulley and slowly release the breaker bar. Pull the breaker bar and socket off of the tensioner and out of the engine compartment.
Crank the engine for ten to fifteen seconds to finish seating the ribs on the inside of the belt to the grooves of each accessory pulley. Turn the engine off.