Buick 2006 Lucerne - Manual (Page 321)

2. Remove the convenience net, if the vehicle has one.
3. Remove the plastic wing nuts retaining the trunk trim.
4. Pull back the trunk trim.
5. Remove the three hex nuts holding the taillamp
assembly in place.
6. Pull out the taillamp assembly.
7. Turn the bulb socket counterclockwise and pull it
straight out to remove it.
8. Replace the old bulb with a new one.
9. Turn the bulb socket clockwise to reinstall.
10. Reverse these steps to reinstall the taillamp
assembly.
When reinstalling the taillamp assembly, make sure
the plastic pin on the taillamp assembly lines up
and is inserted correctly into the opening of
the vehicle.
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2006 - Buick Lucerne Owner Manual