Installation Procedure

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.
Rotate the bulb 1/4 turn to lock into place.

Fig 1: Installing Bulb To Socket
Courtesy of GENERAL MOTORS CORP.
Install the lamp's retainer to the rear bumper by pushing the lamp up and in, then tilting the bottom of the lamp into the bumper.
Install the lamp to the rear bumper by rotating it clockwise or counterclockwise.

Fig 2: Installing Lamp's Retainer To Rear Bumper
Courtesy of GENERAL MOTORS CORP.