How do you replace the serpentine belt on 2001 Saab 9.5 v6?

To replace the serpentine belt on a 2001 Saab 9-5 V6, first, ensure the engine is off and cool. Remove the engine cover if applicable, then locate the tensioner pulley and use a wrench to relieve tension on the belt. Take off the old belt, noting the routing path, and then install the new belt in the same configuration. Finally, release the tensioner to secure the new belt and double-check its alignment before reassembling any components.