Originally Posted by leemanfor
From my understanding, the two on the top of the motor by the timing chain are the cam shaft actuators and the actual cam shaft sensor is under the HPFP.
In the pic I attached "Red" is the position sensor, "Blue" is the intake cam actuator, "Green" is the exhaust cam actuator. The 2 actuators are next to #1 coil pack on the valve cover.
452whp/401wtrq, efr6758, e47, @26psi 100% stock engine
07 Silverado 2500HD Duramax, LBZ, built trans, DPC 1800 stall billet converter and stator, and a bunch of other goodies.