The easiest way to change crankshaft position sensor

First: a diagnostic trouble code that says the crankshaft position sensor signal has been lost is NOT indication that the sensor needs to be replaced. Testing needs to be performed. If you're asking what tools are needed, you shouldn't be attempting this repair. Furthermore, repair manuals are available for this vehicle online. Simply seek out the manual you need. This forum cannot direct you with specifics as you request, unfortunately.