joegr
Dedicated LVC Member
So is a "P0274 alternator load input...." (correct me if im wrong on any of that) related specifically to the alt or does it account for the entire charging system.
I think you have the wrong code there. That should be a fuel injector code.
Sometimes, on some alternators, you may get a sound from a failed diode, but my experience is that they don't make any sound you could hear.
If yours wasn't recently rebuilt, I would suspect that your brushes are worn out.