It is part of the PCM, which is on the passenger side of the firewall.
incorparated in the pcm
If it is the Cummins diesel, it is on the drivers side of engine block.
Driver side of the engine block.
The PCM is the voltage regulator. It is on the firewall, passenger side.
The engine computer is bolted to the driver side front of the engine block.
code 54 means there is no signal from the pickup coil aka ( cam sensor ) to the pcm.
The PCM is bolted to the firewall, under the hood on the passenger side. You unplug, unbolt, and reverse to install. Depending on where the replacement came from it may need programmed.
Trouble code P1693 means: A companion DTC was set in both the ECM and PCM
It is the same fuse that feeds the PCM. So if the truck runs and the alternator works it is not a fuse.
where is the pcm module located on my 1997 Chevy truck
The tach signal comes out of the pcm. The pcm watches the crankshaft position sensor to calculate engine speed. The crankshaft position sensor is behind the starter.