2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 524

Headlamps To replace one of these bulbs: 1. Open the hood. See Hood Release on page 6‑15 for more information. 2. If you are replacing the bulb on the passenger side remove the Engine Air Cleaner cover. See Engine Air Cleaner/Filter on page 6‑22 for more information. 3. Reach in and access the bulb sockets from inside the engine compartment. 4. Turn the bulb socket counterclockwise to remove it from the headlamp assembly and pull it straight out. 5. Unplug the electrical connector from the old bulb by releasing the clips on the bulb socket. 6. Replace it with a new bulb socket. 7. Plug in the electrical connector to the new bulb socket. 8. Reinstall the new bulb socket into the headlamp assembly and turn it clockwise to secure. 9. Close the hood. 6-64