1993 deville 4.9 v8 door lock lights stay on and battery dies.

if you have a visible chip on the key (resistor), the car may not be able to read the signal and go into fail safe mode.

Also try to unlock the car from the drivers door to see if there is an alarm issue. The disarm wire is attached to the key lock cylinder in the drivers door.

Might try pushing the power button on the radio instead of letting the battery die. Look at the functions of the body control module to see if it controls the radio power. If it does, then replace the module.

usualy there is a switch on the driver and passener side, try disarming by unlocking drivers door with the key to disarm the factory alarm, or the passenger door. this should turn off the alarm if it is not aftermarket. the factory alarm will arm any time the door is locked by key or power door lock. good luck

its locked... you need the VIN and call the dealer to give you the code

1) Key turns but dose not unlock door. This means that the rod that goes to the back of the lock has came off. This also means that is the reason door is not unlocking with the remote as it pops the lock rod inside the door which pushes the lock open.
2) Key does not turn lock at all but works passengers side door. This means that the locks has been changed in the door, but that doesn't sound like the problem as you say the remote doesn't open the drivers side door so more than likely the rod has came off the back of the lock

maybe your fuse is bad?

Please contact a Caddy dealer.

sounds as though the latch is jammed. getting the door panel off is the only way to get to it.

I may be able to help if you havent fixed it yet. I believe I had the same/similiar issue...

I would make sure all of the doors were locked with auto lock button on inside of door, then I would shut the door so all doors were locked from pressing the inside auto lock button. then I would use my key to unlock the trunk, open the trunk and close it leaving it unlocked. then i would use the key to unlock the drivers door and the security would reset... if not then unhook the battery for a few minutes then hook back up and see if that works.. glgl

pull the handle and the lock at the same time