2008 Buick Lucerne CX trunk

you can remove the back seat and try to reach them , the dealer may cut a key from the VIN # , you can call a lock smith or AAA , I guess there's no button on the drivers door to open the trunk ?

My 2007 had a button in the glove box.

Lift up your back seat open your fuse panel and pull out the relay for the trunk release once you pull out the relay take a wire and hook it to the positive side of your battery cable and there's four holes you can stick that wire in and it's one of those four holes.

Worked great thankx

Mad -- well done. Very frustrating problem to have when your first grader manages to lock the keys in trunk.