2000 Buick LeSabre Owner's Manual - Page 292

yellowblue Headlamp Aiming 4. Rotate the bulb retainer counterclockwise to remove the bulb assembly. 5. Pull the bulb straight out from the retainer. 6. Push the new bulb straight into the retainer. 7. Reverse these steps to replace the bulb assembly. Your vehicle has a visual optical headlamp aiming system equipped with horizontal aim indicators. The aim has been pre-set at the factory and should need no further adjustment. This is true even though your horizontal aim indicators may not fall exactly on the "0" (zero) marks on their scales. 6-33