Removal Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Carefully grasp the sides of the lens to partially expose the rear retaining tab.
Use a flat bladed tool in order to release the rear lens retaining tab.
Lower the rear edge of the lens away from the headliner.
Move the lens rearward in order to release the front horizontal retaining tab.

Fig 1: Releasing Front Horizontal Retaining Tab
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Remove the lens from the headliner.

Fig 2: Removing Lens From Headliner
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If replacing the reading lamp bulb (1), remove the reflector (2) from the dome lamp.
Remove the reading lamp bulb from the socket.

Fig 3: Removing Reading Lamp Bulb From Socket
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If replacing the dome lamp bulb (1), remove the dome lamp bulb from the socket.

Fig 4: Removing Dome Lamp Bulb From Socket
Courtesy of GENERAL MOTORS CORP.