There could be many reasons why the 1993 Grand Marquis make noises when the doors lock. The wiring could be off, or the motor could be going out.
More than likely the gears are stripping on the door lock actuator and will soon fail to work.
on my 94 grand marquis the password for the doorlocks was a little white sticker on the inside of the trunk lid, kind of in the middle. I hope nobody removed it already.
Type your answer here... how do you remove passenger door panel on 2001 mercury marquis to replace door lock.,
Use a 1999 grand marquis gs key!!
No,they won't fit.
Which ever one or ones are making the noise, the lock actators have gone bad. The actuator comes as part of the door latch.
diagram a\c system 1999 grand marquis online
inside the car
Do you have pictures or video of removing passenger side door panel on a 1996 Grand Marquis LS
The rear actuators may be working, but the locks themselves may be corroded and in need of opening the door up and spraying them generously with penetrant.
replace door latch
on my 96 grand marquis its on the driver side uder the car right below the back door