How do you replace harmonic balancer in a 1990 Oldsmobile 98 regency broughm?

To replace the harmonic balancer on a 1990 Oldsmobile 98 Regency Brougham, first, disconnect the battery and remove the serpentine belt. Then, use a harmonic balancer puller to carefully detach the old balancer from the crankshaft. Install the new balancer by sliding it onto the crankshaft, ensuring it aligns properly, and then secure it with the bolt. Finally, reattach the serpentine belt and reconnect the battery.