2002 Buick Century Owner's Manual - Page 285

To check the aim, the vehicle should be properly prepared as follows: D The headlamps must be off for one hour prior to level surface. aiming and must remain off during this procedure. D The vehicle must have all four tires on a perfectly D If necessary, pads may be used on an uneven surface. D The vehicle should not have any snow, ice or mud attached to it. D The vehicle should be fully assembled and all other D There should not be any cargo or loading of the D Close all doors. D Tires should be properly inflated. D Rock the vehicle to stabilize the suspension. work stopped while headlamp aiming is being done. vehicle, except it should have a full tank of fuel and one person or 160 lbs. (75 kg) on the driver's seat. Driver's Side Headlamp Shown A. Vertical Aim Adjustment Screw B. Horizontal Aim Adjustment Screw Open the hood and locate the vertical and horizontal aim indicators. The aiming screw for the vertical aim indicator (A) is at the center of the headlamp cover and the aiming screw for the horizontal aim indicator is on the outboard side of the headlamp cover (B). 6-35