How do you change headlight bulbs on a 2 004 Pontiac Aztec?

To change the headlight bulbs on a 2004 Pontiac Aztec, first, open the hood and locate the headlight assembly. Remove the plastic cover or dust cap if applicable, then disconnect the electrical connector from the bulb. Twist the old bulb counterclockwise to remove it, and replace it with a new bulb by inserting it and twisting it clockwise to secure it. Finally, reconnect the electrical connector and replace any covers before testing the new bulb.