Chevrolet 2000 Express Van Owner's Manual page 287

Composite Headlamps
1. Open the hood.
2. Locate the rear side of each of the headlamps.
3. Without removing the headlamp assembly itself,
remove the bulb assembly from the back of the
headlamp on the driver's side by turning the bulb
counterclockwise one quarter turn.
4. On the passenger's side, turn the bulb clockwise one
quarter turn. Also, to remove the bulb on the
passenger's side, you will need to move the battery.
5. Install a new bulb. Do not handle the glass part of
the bulb.
6. Reverse the previous steps to reinstall the headlamp.
yellowblue
6-33