Where do you find a knock sensor on 1999 Chevy lumina
YES you do have to remove it all the way. There are 2 knock sensors under the intake.
The knock sensor, in your 1997 Chevrolet Lumina, can be found on the front of the engine. The knock sensor is near the top of the engine.
Knock sensor is located on the side of the engine facing the firewall. There is only one sensor at that side.
It's under the intake manifold.
You can find a 1996 Nissan Pathfinder knock sensor picture in most auto repair manuals. Most Nissan dealerships repair centers will provide you with a picture of the sensor.
You can find the knock sensor on the top side of the engine under the intake manifold. It is easiest to find from the driver's side and is at the back of the engine block.
As you are looking at your truck from the front the knock sensor shoud be on the passenger side right under the manifolds
If you have the 7MGE engine: Then the knock sensor is screwed into the engine block, directly underneath the intake manifold.
A diagram showing where the knock sensor is can usually be found on the car's manufactor website. You can also find a diagram at your local auto parts store.
If you have a local AUTOZONE IN YOUR AREA, you can ask them and they should be able to help you, I think I might need one on my 2001 altima also, so if I find out for sure I will answer back with directions---Good luck!
It is under the plastic cowling where the wiper arms are at.