How do you change the rear spark plugs in a 2005 Pontiac Montana?

To change the rear spark plugs in a 2005 Pontiac Montana, first ensure the engine is cool and disconnect the battery. Remove any necessary components obstructing access to the rear spark plugs, such as the engine cover or intake manifold. Use a spark plug socket to carefully unscrew and remove the old spark plugs, then insert the new plugs, ensuring they are properly gapped and torqued to the manufacturer’s specifications. Finally, reassemble any removed components and reconnect the battery.