2005 Saturn Relay Q&A

2005 Saturn Relay Question: alternator or voltage regulator

my battery went dead ,changed it.now my info center says charging system failure but it comes on and off. also battery volts goes up and down 11.2 -15.0.what could be the problem? -
Answer 1
You need to inspect the data stream of your charging system. The Voltage regulator is now part of the Engine Computer, so first check your Alternator. It could be a bad rectifier, brushes, connections etc. -
Comment 1
Unchanging this same issue I've changed my battery with a new one and replaced the alternator what could be the problem -