Chevrolet 2001 Cavalier Owner's Manual page 274

3. Disconnect the bulb base from the socket by lifting
the plastic locking tab.
4. Remove the black collar by turning it counterclockwise.
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5. Remove the bulb by pulling the bulb straight out.
6. Snap a new bulb into the socket.
7. Reinstall the bulb assembly by reversing
Steps 1 through 3, making sure the lower leg of
the headlamp bracket is properly seated into the
-
wedge shaped retainer.