Table for Alternator Control

[minytrker]

Looking at a stock vette LS3 tune in hpt shows alt remote/override settings disabled and not fitted. LS3 Camaro has them both active.

Did the vette not have BCM charging control with current sensor on the negative cable?

in a vette the ECM controls the alternator

[bubba68ss]

So using the vette alt settings in the tune the Camaro alternator will charge properly? Same alternator right?

[LastCall]

Bringing up an old thread - does anyone know if no BCM causes the alternator to default to 13.8 volts? Or does it default to that once you have disabled BCM control in the tune with another software?

From what I read, the gen4 alternator needs a PMW signal from the BCM, based on a current signal from the negative battery terminal. Doesn't leave many options.

[bubba68ss]

What is very weird is I did a standalone conversion to a e38 harness (battery and ignition wire hookup only) and set the alternator to the vette settings since it did not use BCM to control (from what I have read). Engine runs great without alternator plugged in but when you plug it in the engine will not shut off! It stays running until alt plug is disconnected.