2005 Buick Park Avenue Owner's Manual - Page 282

Front Turn Signal Lamps 1. Once the headlamp assembly has been removed, reach down from the top of the vehicle, and while pressing the lock tab on the socket, turn the socket one-quarter turn counterclockwise and pull it out. 2. Remove the old bulb by pulling it straight out of the socket. Rear Turn Signal, Stoplamps and Back-Up Lamps 3. Replace the bulb and turn the bulb assembly back into place. 5-50