Chevrolet 2006 Silverado 1500 Pickup Owner's Manual page 465

3. Pull the headlamp assembly out.
A. Low-Beam Headlamp
B. High-Beam Headlamp
4. Unplug the electrical connector.
5. Turn the old bulb counterclockwise and remove it
from the headlamp assembly.
6. Put the new bulb into the assembly and turn it
clockwise until it is tight.
7. Plug in the electrical connector.
8. Reinstall the headlamp assembly.
9. Install the pin and turn it into the locking feature.
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