2000 GMC Yukon Owner's Manual - Page 336

Headlamps A. Low-Beam Headlamp B. High-Beam Headlamp 2. Pull the headlamp lens assembly out. 1. Remove the two pins on the top of the headlamp assembly. To remove the pins, turn the outer pin outward and pull it straight up. To remove the inner pin, turn it inward and pull it straight up. 3. Unplug the electrical connector. 4. Turn the bulb counterclockwise and remove it from the headlamp lens assembly. 5. Put the new bulb into the lens assembly and turn it clockwise until it is tight. Use care not to touch the bulb with your fingers or hands. 6. Plug in the electrical connector. 7. Put the headlamp lens assembly back into the vehicle. Install and tighten the two pins. 6-33