2000 Buick Park Avenue Owner's Manual - Page 299

Headlamp Aiming 5. Reverse the above steps to reassemble the lamp assembly. When reassembling the lamp, make sure to align the pin at the outboard edge of the headlamp assembly to the plastic retainer at the outboard edge of the vehicle. The headlamp aiming device is under the hood, directly behind the headlamps. Your vehicle has a headlamp system equipped with horizontal and vertical aim indicators. The aim has been pre-set at the factory and should need no further adjustment. This is true even though your vertical and horizontal aim indicators may not fall exactly on the "0" (zero) marks on their scales. 6-37