Just pull the seat up to remove safety latch and it will come out
its under the back seat....
Use an axe
On a 79/80 Deville there are nuts under the seat that have to be loosened and be careful of the power seat wires and mechanisms under the Seat.
pull up on the front part of the seat
I have a 2000 Deville DTS. The battery is located below the back seat. Just pull up the seat (not back), and you will find the battery.
The battery is located under the rear seat (passenger side).
Two lug nuts on the rear seat in the trunk
The back seat should pop out and your battery and some fuse boxes are under your back seat.
mine is under the seat
Battery is under rear seat. Replace with only the vented correct battery.
remove passenger seat in 2003 cadillac cts
The battery is located under the rear seat.