As for the back of the seat there are a few bolts that hold it in place. 2 of them are at the top corners accessed through the trunk only, the are a 2 1/2 inch long bolt. grab the seat bottum at the lower front edge and jerk!!up sharply and to the rear at the same time
To change the battery in the 2003 Cadillac Seville, you will need to first access the battery that is located under the rear passenger seat. Then remove the battery cables and remove the battery.
Under the rear seat.
The battery to a 1999 Cadillac Seville SLS is underneath the backseat of the car. The car manual explains how to remove the rear seat and gain access to the battery. It is much easier then it sounds.
To remove the back seat of a 1994 Cadillac Seville, start by locating the release mechanisms or screws at the base of the seat. Typically, you may need to lift the front edge of the seat cushion to access and remove these fasteners. Once the cushion is free, pull it out gently. For the backrest, you may need to unbolt or unclip it from the floor or rear deck, then lift it out of the vehicle.
Under the rear seat next to the battery; there is a 10 amp fuse for the seat warmers.
It is under the rear seat which you have to remove to access the battery.
fuse bock under the rear seat.
Remove the rear seat buy pulling up on one side at a time. Underneathe is the battery, just take off the terminals and replace.
Remove rear seat and remove battery
remove your rear seat, battery is located under seat
Its under the rear back seat, you need to remove the bottom portion of the rear seat to get to it.
To remove the rear seat in a 1997 Cadillac STS, start by locating the mounting bolts at the front of the seat bottom, typically found under the seat cushion. Use a socket wrench to remove these bolts. Next, pull up the seat bottom to detach it from the rear clips, then remove it from the vehicle. For the rear seatback, locate and remove any bolts or fasteners securing it, then lift it upwards to release it from the vehicle.