2004 Buick Regal rear door lights, license plate light and some tail lights do not work

SOURCE: 1999 Buick Regal Tail lights, how to get to them.

Hello;
On the Buick, your tail light lens are smooth with no screws accessable from the outside. So, open the trunk and you will see either cardboard or carpeted panels surroounding the trunk. Pull these away and you will see some plastic wingnuts (3-4 each side). Remove the wingnuts, and then pull the light towards the rear from the outside. Your wires and sockets will thrn be accessible. Usually depress the lock and give the socket a 1/4 turn and pull out. Replace the bulb, reinstall in the reverse order.
Hope this helps you.
Thanks;
Rich
RPM Northwest

SOURCE: troubles removing license plate light bulb

yes,thats the only way sorry to say.

SOURCE: 99Century My license plate and backup lights don't work

remove the light pannel and check the sockets for corrosion and the trunk release should be in the glove box

SOURCE: can't open trunk with remote and backup lights and

Sounds like a fuse problem. Have you checked all the fuses yet? Look in your owners manual to see what fuses relate to those three areas you are having trouble with. If you cannot tell if a fuse is blown by looking at it, use a voltmeter set to continuity. Hope this helps

SOURCE: 2002 buick regal back up lights don't work,

Open the trunk and check the wires near the right hinge. You'll probably have some cut wires that will need to get re-connected that go to your lights and trunk release.