2001 Buick Century Owner's Manual - Page 285

Once the horizontal aim is adjusted, then adjust the vertical aim. 1. Turn the horizontal aiming screw until the indicator is lined up with zero. 2. Turn the vertical aiming screw until the level bubble is lined up with zero. Front Parking and Turn Signal Lamps 1. Remove the headlamp assembly. Refer to the removal procedure earlier in this section. 2. Remove the rubber bulb access cover. Passenger's Side Headlamp Shown A. Horizontal Aim Adjustment Screw B. Horizontal Block Index Plate C. Vertical Aiming Level Start with the horizontal aim. The adjustment screws can be turned with an E8 TorxR socket. 3. Twist the sidemarker lamp socket counterclockwise from the headlamp assembly. 4. Holding the base of the bulb, pull the old bulb from the socket. 5. Push the new bulb into the socket. 6. Reverse Steps 1 through 3 to reinstall the lamp assembly. 6-35