The dealer should have that information. Also it may be in the owners manual. If you don't have one, try MOTORLIT.COM
Ou812
The default location is on the Trunk Riser inside of the trunk on the left or right side. Look for a sticker.
Underneath the trunk lid
Look on the trunk lid support arm.
Check inside the trunk, on the lid arm.
thats my question to you
There should be a sticker on the underside of the trunk lid - that's where it was on my 92 grand marquis
The Grand Marquis has shocks, not struts. They are simple bolt on parts.
how to change a valve cover gasket on a 97 mercury grand marquis ?
You cannot reprogram it. A dealer can get you the Master Code if you've lost it.
Mine was under the trunk lid. When you open the trunk you can see it up underneath towards the back. A white sticker with 5 black numbers on it. '94 Grand Marquis
You will find a sticker in the trunck with the factory code printed on it.