GMC YUKON DENALI 2000 Manual page 311

6. Turn the bulb counterclockwise and remove it.
7. Unplug the electrical connector.
8. Put the new bulb into the headlamp assembly and
turn it clockwise until it is tight.
9. Plug in the electrical connector.
10. Put the headlamp assembly back into the vehicle.
Install and tighten the two bolts.
11. Install the two turn signal bulb sockets and the
sidemarker bulb socket into the parking/turn signal
bulb assembly.
12. Install the parking/turn signal assembly. Install and
tighten the two screws.
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