GM Silverado Battery Current Sensor Voltage Drops to 12V+ Fluctuations Part 2 Solved Constant Volts

This is the installation and test drive of the Mechman MM-VC1 and P103 module to resolve GM's RVC low voltage condition to a fixed voltage at all times regardless of RPM. The MM-VC1 resolves the problem and maintains a constant voltage set but the % duty setting. The ideal is 78% duty at their 120Hz that really should be 128Hz for GM. The MM-VC1 runs perfectly never dropping to GM's RVC low voltages that can be as low as 12V+. The video is long but includes important details at the installation start concerning a problem with the short alternator harness provided by Mechman that should be watched during installation. even though using the MM-VC1 is slightly more expensive, it is safer than adding add-on pieces that can risk damage to the ECM or PCM rather than just possible damage to an alternator.
Installing the MM-VC1 prevents GM's computer controlled alternator voltage fluctuations and maintains a constant voltage controlled with the % duty set and modified by clicking % up or down. A 75% or 76% appear to be a good setting that maintains voltage at 14.5V or 14.6V that with not overcharge the batteries and is the voltage on Ford Super Duty trucks and GM SARVC 2500 3500 HD trucks. If you have a Battery Current Sensor along the ground cable to the engine, you have the GM Regulated Voltage Control RVC system fluctuating the voltage to as low as 12V+.