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I'm getting P340/P341 DTC's on my 2005 GTO. My battery is fully charged. I've tried changing the sensor. I tested the wiring harness (resistance across each wire, pin to pin, and pin to ground), and everything checked out there. I checked for voltage at the harness connector (12V on the supply, and 0V on the signal and ground). I even took apart the ECM connector to drag test the pin/socket connection. Everything seems fine, but the ECM doesn't read anything from the cam position sensor. The only thing I can think of is my ECM is toast, but I don't see an visible signs of damage externally or on the pins. Any help would be appreciated. .