How do you change out a harmonic balancer on a 2001 Chevy Metro?

To change the harmonic balancer on a 2001 Chevy Metro, first disconnect the negative battery terminal and remove the drive belt. Use a puller tool to remove the old harmonic balancer, then clean the crankshaft and inspect it for damage. Install the new harmonic balancer by aligning it properly and pressing it onto the crankshaft. Finally, reattach the drive belt and reconnect the battery terminal.