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Re: Silverado Alternator not putting out proper volts - Already changed the alternato
here are the numbers someday31
tested a 2003 6.0l 2500hd. Has the same charging system wiring and controls.
checked voltages at alternator connector (backprobed terminals with connectors connected) with truck off, koeo and koer at idle; results as follows:
terminal c at alternator which is gry wire...goes to pcm... and is the off/run/crank volts field duty cycle signal
key off eng off 0v, koeo 2.074v, keor 3.98v
terminal b at alternator which is brown wire...goes to pcm... and is the serial data charge indicator control
key off eng off 0v, koeo 1.311v, koer 11.22v
of course forgot to check alt output amp and volts...but I know the charging system is good on this truck.
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