Chevrolet Tracker 2003 Owner's Manual page 272

To replace a headlamp bulb, do the following:
1. Open the hood.
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2. Remove the rubber
cover and socket from
the headlamp.
3. Release the retainer clip holding the bulb by
pressing down and moving the metal retainer away
from you.
4. Pull the bulb out of the fixture.
5. Reverse the steps to install a new bulb.