Buick 2001 Park Avenue - Manual (Page 299)

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3. Remove the bulb socket
by turning it one - quarter
turn counterclockwise,
while pressing it firmly.
Then pull it out. You can
use pliers to remove the
bulb socket if you are
unable to do it by hand.
4. Remove the wire connector from the bulb by
lifting the lock tab and pulling it away from the
plastic base.
5. Replace the old bulb with a new bulb.
6. Reverse Steps 1 through 4 to reassemble the
lamp assembly.
When reassembling the lamp, make sure to align the
pin at the outboard edge of the headlamp assembly to
the plastic retainer at the outboard edge of the vehicle.