Pontiac 2006 Grand Prix - Manual (Page 361)

4. Pull the headlamp assembly straight out from the
vehicle. (Moving the headlamp up and down
slightly may help with its removal.)
A. High-Beam Headlamp
B. Low-Beam Headlamp
C. Sidemarker Lamp
5. Turn the bulb socket ring one-quarter of a turn
counterclockwise to remove it from the headlamp
assembly.
6. Pull the old bulb from the socket.
7. Place the new bulb into the socket.
8. Turn the bulb socket ring one-quarter turn clockwise
to reinstall it back into the headlamp assembly.
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