Chevrolet HHR 2011 Owner's Manual page 318

To replace the headlamp, turn signal, or parking
lamp bulb:
1. Turn the wheel to access the wheel well.
2. Remove the fasteners located on the wheel liner.
To access the headlamp and the turn signal/
parking lamp bulbs.
6-42
3. Reach in behind the wheel well liner and locate the
bulb to be changed.
4. Turn the bulb socket counterclockwise and pull it
straight out of the lamp assembly.
5. Pull the old bulb straight out of the bulb socket.
6. Push the new bulb straight into the bulb socket
until it clicks.
7. Push the bulb socket straight into the lamp
assembly and turn it clockwise to lock it into place.
8. Reinstall the wheel well liner using fasteners.