most GM cars have the button inside the glove box.
One that fits.......
beside the drivers seat...on the floor
Mine doesn't have automatic trunk release. I use the key to unlock my doors to open the trunk.
There's a black cord inside the trunk on the top left.
This may or may not help. My '96 has an interior trunk release lever located on the floor between the driver's seat and the door sill. I don't know how long Pontiac located the release there.
Approximately 85 percent of the parts of the 1998 Chevrolet Cavalier and the 1998 Pontiac sun fire are interchangeable. Most of the parts that are not interchangeable are in the passenger compartment.
The trunk release is located in the center console between the two front seats. it is a square button.
Try the trunk release on/off button located in the glove box. If this button is in the off position then the trunk release button will not work.
how to check fuse for horn in a 1998 Pontiac sunfire
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.
Have a helper pull the release handle while you look at the release mechanism. This will tell you if the cable is broken or if the problem is in the trunk mechanism.
on mine it was just with the keys or the little button for trunk release on the keys. Mine never had a lever inside the car.