I have a 06 impala 3.9, Ive had some misfiring and had the service engine light come on and some misfiring had it scanned & said camshaft sensor....I need some help getting to it I already see it behind the steering pump but need a belt diagram and how to remove the pump....Im pretty sure its the cam sensor ....please help I already removed the antifreeze res....Does this sound like its the sensor?

 

I was driving yesterday and it cut off while I was driving... the steering wheel just got tight on me. It started up like regular but then it stalls..I don't know what could be the problem.. it happened again later that night.. it could be the camshaft position sensor.