WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
Install the bulb to the socket by pressing it into place.
Install the dome lamp lens. Ensure that the lens is fully seated.
Fig 1: Installing Bulb To Socket By Pressing It Into Place