How do you change rear spark plugs on Oldsmobile silhouette?

To change the rear spark plugs on an Oldsmobile Silhouette, first, ensure the engine is cool and disconnect the negative battery cable. Remove any engine covers or components obstructing access to the rear spark plugs, typically located near the back of the engine. Use a spark plug socket to carefully unscrew the old plugs, then install the new ones, ensuring they are properly gapped and torqued to the manufacturer's specifications. Reassemble any components you removed and reconnect the battery.