How does the cam and crank angle sensor work?
• The magnetic effectuses a magnet in the sensor to sense notches cut in the crank and cam. As the notches pass the sensor, they create a field in the magnet. This field also creates an alternating current signal that the sensor sends to the PCM to make sense of it all.
What happens to the crank sensor on a GMC?
The crankshaft sensor on GMC vehicles is synced to the powertrain control module, or PCM. When the crank sensor is replaced, it must be resynced to the PCM. Without resyncing, the PCM cannot properly determine the position of the crankshaft.
What happens when the camshaft position sensor fails?
When the camshaft position sensor fails completely, the engine will not start or will shut off if it fails during operation. If the crankshaft position sensor fails, the engine may not start, or will have excessive vibration if it operates.
Where is the camshaft sensor on a GM Gen III engine?
All engines equipped with a Gen III 24x reluctor use a black crankshaft position sensor; all engines equipped with a Gen IV 58x reluctor use a gray crankshaft position sensor. All Gen III engines have a camshaft position sensor in the rear of the engine behind the intake manifold.
Why do I need to change the camshaft position sensor?
The problem with changing out the camshaft position sensor is that sometimes the issue is actually due to the sensor wiring harness; which might be the reason this OBD-II error code was triggered initially. The P-0340 trouble code indicates that the signal to and from the camshaft position sensor and the PCM is broken.
Where can I find the crankshaft position sensor?
Crankshaft position sensors can be located on the crankshaft pulley (aka harmonic balancer), the flywheel/flex plate, or on the fuel pump on some diesel applications. What are the common causes of code P0016 ?
The crankshaft sensor on GMC vehicles is synced to the powertrain control module, or PCM. When the crank sensor is replaced, it must be resynced to the PCM. Without resyncing, the PCM cannot properly determine the position of the crankshaft.
Can a GM PCM be used for a low resolution crankshaft signal?
General Motors never released a coil-per-cylinder ignition system that used a low-resolution crankshaft signal, meaning that the PCM cannot be recalibrated for coil-per-cylinder ignition with a low-resolution crankshaft signal.