Is there a fuse box under the hood
Chilton's Automotive Repair Manuals are a good source to find fuse box diagrams for the 1986 Buick Park Avenue. This repair manual can be purchased for around $25 or less.
no
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under the back seat....
Under the back seat
The Buick Park Avenue Started In 1991
The fuse box for a 1998 Buick Park Avenue is located just below the dash near the driver's side floor board. It houses most of the essential fuses required to operate the vehicle.
if you have that manual go to the fuse box section, see what fuse it is and pull it out.
Pull the fuse or fuel pump relay.
on my car its under back seat and under the hood
FUSE!
check the charging fuse and the fuse able link on field wire