How do you change the AC belt on a 2004 Saturn Ion?

To change the AC belt on a 2004 Saturn Ion, first, ensure the engine is off and cool. Remove the engine cover and locate the AC compressor. Using a wrench, relieve tension on the serpentine belt tensioner to slip off the old belt. Install the new belt by routing it according to the belt diagram typically found on the engine compartment, then restore tension on the tensioner before rechecking the belt alignment.