GM新君越君威凸轮轴位置传感器12577245 12588992 五菱通用替换

Mounted on the cylinder head near the camshaft gear, the GM camshaft position sensor (OEM: PC655, 12577245, 12588992, 96201 5S7412) monitors camshaft RPM and position, sending data to the ECU to precisely control ignition timing and fuel timing. This sensor fits new Buick LaCrosse, Regal, and Wuling GM models. Installation difficulty is medium; recommended labor time 30-45 minutes. When starting difficulty, rough idle, weak acceleration, or check engine light on, typically indicates sensor signal abnormality and replacement is needed.