Buick 2005 Century - Manual (Page 259)

Center High-Mounted
Stoplamp (CHMSL)
1. Open the trunk.
2. Reach through the access opening in the trunk lid.
3. Remove the old bulb by turning it counterclockwise
one-quarter turn.
4. Push the new bulb into the bulb socket.
5. Turn the socket clockwise one-quarter turn
to reinstall.
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