On the top right of the big black manifold...
its the sensor in the tube going in to the throttle body from the air cleaner
Rear of the engine block.
22L (liters) is 5.81 US gallons.
it is next to the coils at the rear of the engin between the tranmission and the engin
the t.p.s is right across from the throttle cable on the throttle body the when u find it u will see how to take it off
lr stands for long rifle(uses a bullet) I dont know where you got 22l from
there is a sensor in the bottom of the coolant bottle, change this and you should be o.k. tap the sensor with a screw driver it will go out uts just stuck
GM doesn't have the fuel pump inertia switch. That's a Ford thing.
your eng has jump timeing Or you may need to replace the cam position sensor
Impossible to answer without more information
50-200 usd
10-1000 USD depending on specifics.