2004 GMC Yukon Owner's Manual - Page 436

Front Turn Signal, Sidemarker and Daytime Running Lamps 5. Remove the old bulb from the bulb socket. 6. Put the new bulb into the bulb socket. Use care not to touch the bulb with your fingers or hands. 7. Put the bulb socket into the turn signal housing and turn it clockwise until it locks. 8. Reinstall the turn signal housing onto the vehicle, placing the hook and posts on the inner side into the alignment holes, and the outer side into the retainer bracket. Push until you hear a click. 9. Reinstall the headlamp assembly. Side Identification Marker Lamps A. Sidemarker Lamp B. Retainer Clip C. Front Turn Signal Lamp D. Daytime Running Lamp 1. To expose the service slot, locate the lamp gasket near the rear wheel, and pull back the edge. 2. Using a flat tool, push into the slot to release the lamp housing. 3. Pull the housing out to expose the wiring harness and connector. 4. Unplug the lamp assembly harness from the housing. 5. Unplug the lamp. 6. Put in a new lamp and snap it into the housing. 7. Reinstall the lamp housing. 1. Remove the headlamp assembly as mentioned previously. 2. Press the retainer clip, located behind the turn signal housing, towards the outside of the vehicle. 3. Pull the turn signal housing out from the vehicle. 4. Press the locking release lever, turn the bulb socket counterclockwise and remove the socket from the turn signal housing. 5-58