2008 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 465

The vehicle should: To adjust the vertical aim: 1. Open the hood. See Hood Release on page 5-13 for more information. • Be placed so the headlamps are 25 ft. (7.6 m) from a light colored wall. • Have all four tires on a level surface which is level all the way to the wall. • Be placed so it is perpendicular to the wall. • Not have any snow, ice, or mud on it. • Be fully assembled and all other work stopped while headlamp aiming is being performed. • Be normally loaded with a full tank of fuel and one person or 160 lbs (75 kg) sitting on the driver seat. • Have tires properly inflated. • Have the spare tire is in its proper location in the vehicle. Headlamp aiming is done with the vehicle's low-beam headlamps. The high-beam headlamps will be correctly aimed if the low-beam headlamps are aimed properly. 2. Locate the aim dot on the lens of the low-beam headlamp. 3. Record the distance from the ground to the aim dot on the low-beam headlamp. 5-59