1. Open the hood of the Tahoe.
2. Locate the headlight assembly that needs the bulb replaced.
3. Turn the retaining ring on the back of the headlight assembly counterclockwise and remove it.
4. Remove the old bulb from the headlight assembly.
5. Push the new bulb into the headlight assembly until it is seated properly.
6. Replace the retaining ring on the back of the headlight assembly and turn it clockwise until it is snug.
7. Close the hood of the Tahoe.
