No, it just makes it a easier job.
It's a pain in the neck, the sensor is under the engine mount by the starter and the mount has to be removed to access the sensor.
The crank sensor is behind the starter. Remover the starter at the back of the engine and you will see the sensor
The 2003 Saturn L200 has a camshaft position sensor. It is located on the bottom front of engine behind the Starter. You will need to remove the two bolts that are holding the Starter to get to the sensor.
It is above/behind the starter. The starter must be removed in order to access the sensor to change it.
NO you can replace it without I't's just a 10 mm head bolt but you will need pliers or a screwdriver to "help" the sensor out The "O" ring will be tight
There is a video on U-Tube showing where the sensor is and how to change it. It is above the starter
This is a quick answer. Its above the starter going into the side of the block. (front side of the engine) Disconnect the battery. Remove the starter. Remove the wore plug into the sensor. The sensor has 1 bolt holding it in. Remove the bolt, you may have to wiggle the sensor at the base a bit as you pull it out. Replace, and make sure it is pushed in all of the way. Replace the bolt, wire plug, starter, reconnect the battery. If you have ever removed or replaced a starter this is cake, that is the hardest part of the job. Rich
The 1997 Saturn knock?æsensor is located on the back of the engine. The knock sensor can be removed by removing the wiring harness and the retaining bolts.
The rear crankshaft sensor is located on the back of the crankshaft. The rear engine cover will need to be removed in order for the sensor to be visible.
on the back of the engine . above the starter 10 mm bolt holds it in.
depending on the year, I have a 2002 intrigue, it is located just above the starter, it needs to be removed to remove the crankshaft sensor, 15mm for starter and 10mm for sensor 1 bolt , not to difficult.
---------------------------------------------------------- The camshaft positioning sensor is hidden behind the starter motor on the 3.5 6-cyl. engine. I think it's the same for the 4.0. The starter motor must be removed to replace the sensor.