Try changing the crank sensor it worked on my 1993. Behind the harmonic balancer.
6 one for each cly.
Always towards the fuel injectors.
Manifold Absolute Pressure/Barometric Pressure Sensor
33 psi
30LBS in each tire.
40-47psi
Not sure what a fuel shut off valve is on a 2000 Lesabre. There is a fuel pump relay, a fuel pressure regulator, a fuel pump, fuel injectors, a fuel filter, but no fuel shut off valve.
on the fuel rail to the side
Most likely not. Buick changed the front end design on the LeSabre in 1997. They are probably a completely different hood.
The PCV valve for a 2001 Buick LeSabre is located in the top of one of the valve covers. It is a plug in unit and is easily changed.
nope
32-35 psi