2004 GMC Canyon Owner's Manual - Page 315

Sealed Beam Headlamps To replace the headlamp capsule, do the following: 1. Remove the four retainer screws and the retainer. 2. Pull the headlamp capsule toward you and unplug the electrical connector. 3. Plug the electrical connector into the new headlamp capsule. 4. Reverse Steps 1 and 2 to reinstall the headlamp. 3. Turn the bulb socket counterclockwise and pull it straight out of the headlamp housing. 4. Unplug the electrical connector from the old bulb. 5. Plug in the electrical connector to the new bulb. Use care not to touch the new bulb with your bare hand or anything damp or oily. 6. Place the connector with the new bulb into the headlamp housing and turn it clockwise until it is tight. 5-51