its under the back seat on the passenger side
The battery for the Buick LeSabre (2000) is located under the rear seat cushion.
Instructions for replacing radiator on 2000 Buick Lesabre custom
the battery is under the back seat
Amazingkeys.com has the 2000 Buick LeSabre Key. It does have the chip in it.
where is the ecm on a 2000 buick lesabre
Easy. There is no Buick LeSabre "Deluxe".
Located in the fuel tank - probably have to remove for access
It is a Group 78, but check for the venting tubes otherwise the fumes will eat your back seat
no
In my 2000 LeSabre, it's under the back seat. Remove the rear seat and I'll bet it's there.
You can get a wiring diagram for a 2000 Buick LeSabre at any auto parts store. A Buick dealership may also be able to give you a wiring diagram for free.
If it is like the 2000 LeSabre, the rear seat will lift out and the battery is under it on the passenger side. It requires some force, but the front of the seat cushion should lift up then can be removed.