2006 GMC Yukon Owner's Manual - Page 429

4. Pull the old bulb straight out from the socket. Replacement Bulbs Exterior Lamp Back-up Lamp Daytime Running Lamps (DRL) Front Roof Marker Lamp and Sidemarker Front Turn Signal Lamp Headlamps High-Beam 9005 9006 3157 - Bulb Number 3157 4114K 194 3157 5. Press a new bulb into the socket, insert the socket into the taillamp housing and turn the socket clockwise into the taillamp housing until it clicks. 6. Reinstall the taillamp assembly. Low-Beam Rear Turn Signal Lamp, Taillamp and Stoplamp Side Identification Marker Lamp For replacement bulbs not listed here, contact your dealer. 5-55