2007 C6 Charging Issues

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Oct 10, 2025 | 12:43 AM

jz18

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2007 C6 Charging Issues

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Last edited by jz18; Oct 11, 2025 at 06:53 PM.

Oct 10, 2025 | 08:06 AM

C5 Diag

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From: Cape Coral, Florida

What do you mean by “multi-metered my alternator and only getting 12 volts TO it” ??…are you checking at the alternator or at the battery terminals ??

Oct 10, 2025 | 02:49 PM

jz18

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Quote:

Originally Posted by C5 Diag

What do you mean by “multi-metered my alternator and only getting 12 volts TO it” ??…are you checking at the alternator or at the battery terminals ??

At the alternator. However now today with some more light I'm almost certain it's my Harmonic Balancer going out, video attached. Would explain why I was having such a problem with accessories. HB is covered in metallic liquid
Video here:

Oct 10, 2025 | 02:55 PM

C5 Diag

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From: Cape Coral, Florida

You’d be seeing more a P0300 from a wobbly HB than alternator charging issues.

Oct 10, 2025 | 03:10 PM

jz18

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Quote:

Originally Posted by C5 Diag

You’d be seeing more a P0300 from a wobbly HB than alternator charging issues.

I did get a P0300 before I installed the new alternator and new battery. Stated that in the orignal post

Oct 10, 2025 | 03:25 PM

C5 Diag

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You may be chasing 2 separate issues…sorry but can’t give you a diagnosis over the internet.

Oct 10, 2025 | 03:43 PM

jz18

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Quote:

Originally Posted by C5 Diag

You may be chasing 2 separate issues…sorry but can’t give you a diagnosis over the internet.

Wasn't looking for one, was looking for ideas, thanks.

Oct 10, 2025 | 03:48 PM

C5 Diag

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From: Cape Coral, Florida

The B1325 may have set if your battery voltage may have below 9 volts due to the alternator…as far as the random misfire there can be MANY causes…you may need to check the alternator connector if your new alternator is not charging properly.