2003 GMC Sonoma Owner's Manual - Page 320

One-Piece Front Turn Signal Lamps 1. Remove the headlamp assembly as shown in "One-Piece Composite Headlamp System" under Headlamps on page 5-55. 2. Twist the bulb socket counterclockwise to remove it from the headlamp assembly. 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 lens assembly back into the vehicle. 9. Install the two retaining clips. 10. Close the hood. 3. Pull the bulb straight out to remove it from the socket. 4. Push the new bulb into the socket until it snaps into place. 5. Put the bulb socket into the lamp assembly and twist it clockwise until it is tight. 6. Put the headlamp assembly back into the vehicle. 7 . Install the two retaining clips. 8. Close the hood. 5-57