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The Buick Enclave,Buick LuCerne,and Buick LaCrosse And In 2011 they will bring back a newer,hotter BuickREGAL
The battery is located under the back seat bottom.
Remove the two or three plastic nuts in the corner where you are changing the bulb. Pull back the felt liner and then remove the three 10mm nuts. The light assembly can then come out for you to change the bulb.
unbolt it
In my 2009 it is under the back seat. There is probably also a second fuse panel in the engine compartment. Consult your owner's manual for details.
The battery is under the back seat. Remove cushion and remove Black--Negative cable first. It's a side-post terminal.Put the dielectric grease on the threads. Swap batteries and the car will run rough for a few minutes while the UCE 're-learns' but that is normal and nothing to be concerned about
its under the back seat
Push the button like thing next to the head light switch and twist the way u want the lights to show then push it back in
Remove the back seat.
You need to do a lot if it is like my 1995. You need to remove the back seat remove the back of the back seat remove the screws holding the rear deck.. where the speakers are. then remove the screwss... what a pain.
under the back seat. not 2 hard
Push in the snaps on the back end and tilt up from there.