2003 GMC Sonoma Owner's Manual - Page 319

Two-Piece Composite Headlamp System 1. Open the hood. 5. Turn the bulb assembly counterclockwise to remove it from the headlamp assembly. 6. Put the new bulb into the bulb assembly and reinstall it in the headlamp assembly by turning it clockwise until it is tight. 7. Plug in the electrical connector. 8. Put the headlamp assembly back into the vehicle. 9. Install the two retaining clips. 2. Remove the black retainer clips by lifting up. 3. Unplug the electrical connector. 4. Pull the headlamp lens assembly out. IO. Close the hood. 5-56