My Chevy lumina-sedan 3.1L V6, 1995's ECU module shows the 3X Crankshaft position sensor's signal error. The sensor was removed and has been reinstalled. Does it require retraining the ECU? what is the right sensor voltage from cranking the engine in order to diagnose this sensor?
If need to replace, what is the best way to reach it? it locates on the back side of the engine block near firewall!
Thanks in advance.