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.
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 rear seat and remove battery
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 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.
Two lug nuts on the rear seat in the trunk
under back seat