NOTE: The work is shown on a sedan car. On a hatchback car, the work is performed in the same way...
...the only difference is in the location of the lantern installation.
1. Disconnect the wire from the negative terminal of the battery.
2. Press the lamp housing in the direction of the arrow. This will disengage the retaining tab on the lamp housing from the edge of the opening in the body.
3. Pull the lamp out of the spring contacts.
4. Insert the new bulb.
5. Install the lantern in place.
The article is reprinted from the website chevyman