How do you replace the spark plugs on a 1999 Buick lesabre 3.8 v6?

To replace the spark plugs on a 1999 Buick LeSabre 3.8 V6, first ensure the engine is cool, then disconnect the negative battery cable. Remove the ignition coil pack by unscrewing it and detaching the electrical connector. Use a spark plug socket and ratchet to carefully unscrew the old spark plugs, then install the new ones, ensuring they are properly gapped. Finally, reassemble the ignition coil pack and reconnect the battery.