Lost key for my 78 Cadillac Deville :/

The usual solution is to break a window (normally the cheapest/easiest to replace) but on an older Yank motor that may not be a good idea!!

Is the boot locked? Can you open it and undo the back of the rear seat from within the boot.

Then of course there is the bent wire coat hanger trick.

Or if the locks are worn you could just try a selection of keys and hope that you can find one that will open it.

Once in there, if you remove one of the lock barrels a locksmith should be able to cut a key for it.

Thanks, would definitely give mobile car locksmith near me a call when locked out of my car or lost car keys.

Are you replying to the mobile locksmith post shared above ?

This thread is old and was bumped by an advert. I should imagine the OP has dealt with his lock issue by now.