2010 GMC Yukon Owner's Manual - Page 81

4. Press the release tab, if bulb socket has one, and turn the bulb socket counterclockwise to remove it from the taillamp assembly. 5. Pull the old bulb straight out from the bulb socket. 6. Press a new bulb into the bulb socket and insert it into the taillamp assembly. Turn the bulb socket clockwise into the taillamp assembly until it clicks. 7. Reinstall the taillamp assembly. When reinstalling, make sure to line up the pins on the taillamp assembly with the vehicle. If this is not done the taillamp assembly cannot be correctly installed. Electrical System High Voltage Devices and Wiring { WARNING: Exposure to high voltage can cause shock, burns, and even death. The high voltage systems in your vehicle can only be serviced by technicians with special training. High voltage devices are identified by labels. Do not remove, open, take apart, or modify these devices. High voltage cable or wiring has orange covering. Do not probe, tamper with, cut, or modify high voltage cable or wiring. Replacement Bulbs Exterior Lamp Back-up Lamp and Rear Turn Signal Lamp Sidemarker Lamp Bulb Number 3156 194 For replacement bulbs not listed here, contact your dealer/retailer. 6-25