Buick 2010 Lacrosse Owner's Manual page 321

3. Remove the four plastic wing
nuts retaining the taillamp
assembly in place.
4. Pull out the taillamp assembly
and disconnect the wiring
harness.
A. Back-up Lamp
B. Turn Signal Lamp
5. Turn the bulb socket
counterclockwise to remove it.
6. Pull the old bulb straight out of
the bulb socket.
7. Push the new bulb straight into
the bulb socket until it clicks.
8. Turn the bulb socket clockwise
to reinstall.
9. Reconnect the wiring harness.
10. Push the taillamp assembly
back into place on the vehicle.
11. Turn the four wing nuts
clockwise to reinstall them.
12. Place the trunk trim to its
original location.
The licence plate lamps for this
vehicle are on the trunk lid.
To replace one of these bulbs:
1. Open the trunk. See
for more information.
2. Push the end on either of the
lamp assemblies (passenger
side shown) and then move the
lamp assembly down to remove
it from trunk lid.