Buick 2013 Regal Owner's Manual page 285

4. Replace the bulb in the bulb
socket.
5. Install the bulb socket in the
headlamp assembly by turning it
clockwise.
6. For the driver side, reinstall the
windshield washer bottle filler
neck by firmly pushing it straight
into the bottle. Ensure that the
filler neck clip engages into the
underhood electrical center
retainer.
To replace the fog lamp bulb:
1. Locate the bulb assembly under
the front fascia.
2. Disconnect the electrical
connector from the bulb
assembly.
3. Remove the bulb by turning it
counterclockwise and pulling it
straight out of the assembly.
4. Install the new bulb by turning it
clockwise into the assembly.
5. Reconnect the electrical
connector to the bulb assembly.
1. Taillamp
2. Taillamp/Sidemarker Lamp
3. Stop/Turn Signal Lamp
4. Back-up Lamp
To replace any one of these bulbs:
1. Open the trunk. See
2. Remove the trunk trim panel
push pin.
3. Pull the trunk trim panel back to
gain access to the taillamp
assembly.
4. Remove the two nuts that
secure the taillamp assembly.
5. Remove the taillamp assembly
and disconnect the wiring
harness connector.
6. Turn the bulb socket
counterclockwise to remove it.
7. Pull the bulb from the socket.
8. Install a new bulb.
9. Turn the bulb socket clockwise
to install it.
10. Reverse Steps 2 4 to reinstall
the taillamp assembly.
.