2003 GMC Sierra 1500 Pickup Owner's Manual - Page 436

Bulb Replacement For any bulb changing procedure not listed in this section, contact your dealer. See Replacement Bulbs onpage 5-70 for the proper types of bulbs to use. Headlamps "dc-en Bu'% Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package. 1. If your vehicle is equipped with two pins, remove the two pins on the top of the headlamp assembly. To remove the pins, turn the outer pin outward and pull it straight up. To remove the inner pin, turn it in and pull it straight up. 5-6 1