Hi there. Here is a Step by Step guide that will help you replace your serpentine belt.
Find the belt tensioner
pulley. The tensioner pulley is generally between the crankshaft and a component toward the top of the hood area.
Check the belt routing so you know how to replace the belt. You may be
able to find a belt routing diagram on a decal on the fan shroud or in
support documentation. Otherwise, make you own sketch for reference.
Rotate the belt tensioner pulley, using the wrench, to and relieve tension on the belt.
Slip off the old belt and slowly release the tensioner pulley.
Use your belt routing diagram to put the new belt onto all of the pulleys. Pay close attention to the water pump
pulley, as incorrect routing can cause the water pump to run backwards and overheat.
Make sure the belt is correctly routed and seated on all pulleys.
Rotate the tensioner again to allow for the belt to slip onto all
pulleys and then release the tensioner again to regain correct tension
on the belt.
Please rate and god bless.