Saturn Repair: cam shaft position sensor, crankshaft position sensor, cam shaft position sensor

Question
i have a 2001 saturn sl2 i need to know where the cam sshaft position sensor is located at and best way to chage it .it is sensor a that needs chaged

Answer
Phillip,
 I hate to tell you this, but there is not Camshaft Position Sensor on any 1.9L Single or Dual OHC.  I assume you had someone read a Diagnostic Trouble Code from your PCM.  They probably told you that you needed a Camshaft Position Sensor, and then offered to sell you one.  I would recommend changing your spark plugs and your plug cables with FACTORY REPLACEMENTS.  This will usually make the DTC go away.  Aftermarket plugs and wires rarely work well for this engine.  If you are looking for a CRANKSHAFT position sensor, look between the engine and transmission on the back side of the transmission.  It is also known as the "transmission input speed sensor".  More often than not though, your engine will not fire up if the Crank position sensor is not working.  Hope this helps.  

Chris