Yes.
Glove box
It should be in the trunk...pull the mat up right behind rear seats and you should see an access with about 7 or 8 bolts.
Check in the glove compartment.
Usually they are in the glove box, but they could be located on the floor, in front of the seat, on the drivers side, or on the drivers door itself. The 1998 Buick Regal unfortunately does not have a manual trunk release. There are kits available to add a manual trunk release, however.
NO, only button it has is on remote and manual open on trunk door, when car is unlocked.
The rear speakers on a 1999 Buick Regal are removed by accessing the speakers from the trunk. The mounting bolts and then removed, the wires disconnected, and the speakers lowered from their mounts.
Inside the glove box on the left side. There is a button. Push it.
Remove rear seats
The tire pressure specifications for a 2002 Regal are located inside the trunk on the trunk lid. They recommend 30 psi for a cold tire reading and 34 when a tire is hot.
No, the only release is in the glove box.
I have an buick regal custom 1992 and in my glove box there is a trunk release button. yellow. Not sure if this is a standard
No, look inside the glove box, on the left hand side, there should be a YELLOW button that says "trunk" on it. This will also release the trunk.