Oldsmobile 2004 Silhouette - Manual (Page 355)

4. Unscrew the bulb socket from the lamp assembly
by pressing the tab while turning it
counterclockwise.
5. Replace the bulb by pulling the old one out and
gently pushing the new one into the lamp socket.
6. Line up the tabs on the socket with the gaps in the
socket holes and screw the bulb socket back into
the lamp housing until a click is heard (the tab
popping back out).
Front Turn Signal/Parking Lamp Front Sidemarker Lamp
5-53