How replace belt tensioner 1994 Chevy Beretta?

To replace the belt tensioner on a 1994 Chevy Beretta, first, disconnect the negative battery cable for safety. Then, use a wrench to relieve tension on the serpentine belt and carefully remove it from the tensioner. Unbolt the old tensioner using the appropriate socket size, and install the new tensioner in its place, tightening the bolts securely. Finally, reattach the serpentine belt, ensuring it's routed correctly, and reconnect the battery cable.