How do you adjust the headlight aim on a 2001 Pontiac Aztec?

To adjust the headlight aim on a 2001 Pontiac Aztek, park the vehicle on a level surface about 25 feet from a wall. Measure and mark a horizontal line at the height of the center of the headlight bulbs on the wall. Turn on the headlights and adjust the vertical aim using the adjustment screws located on the headlight assembly, ensuring the light beams are focused just below the marked line. For horizontal adjustments, align the beams so they are slightly to the right of the centerline.