under the intake manifold
facing the engine, it is at the forward right side
Mounted on top and inside the fuel tank.
It is located in the fuse panel in the engine compartment under the plastic removable piece.
5x115 is bolt pattern for 97 Cadillac eldorado
You have to drop the subframe
No. depending on your model, it fits 1997-1999 deville, 1995-2002 eldorado, or 1992-1997 seville.
7.6L, or until it says full on the dipstick.
The '97 is OBDII. There are 4 different O2 sensors on the '97 Cadillac. http://www.airbagcrash.com
Not at all if it's been properly maintained
There are two variants of the NORTHSTAR. The base Eldorado produces 275 bph and the ETC produces 300.