1998 GMC Savana Van Owner's Manual - Page 276

Sidemarker Lamps 3. Squeeze the tab on the side of the bulb assembly while turning it to the left. Remove the bulb assembly from the back of the lens and replace the bulb. 1. Remove the screw from the top of the lens. Reverse Steps 2 and 3 to replace the bulb. Turn the socket to the right to replace in the lens it assembly. Replace the screwson the parkingkurn signal lamp assembly. 6-36