How do you replace the pulley at Saturn SL2 1998?

To replace the pulley on a 1998 Saturn SL2, first disconnect the negative battery cable to ensure safety. Remove the serpentine belt by loosening the tensioner pulley, then take off the old pulley by unbolting it from the engine. Install the new pulley, ensuring it is securely fastened, and reattach the serpentine belt, making sure it’s properly aligned. Finally, reconnect the battery cable and start the engine to check for proper operation.