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Aug 5, 2023 | 08:37 PM

Mike98SilVert

Thread Starter

Team Owner

Joined: Sep 2002

Posts: 30,671

Likes: 4,621

From: Bonita Springs, Florida

C5 Diag

Thanks Rob (C5 Diag) for giving my C6 a scan check-up today. Rob really knows his stuff and has all of the latest diagnostic tools.

Aug 6, 2023 | 04:58 AM

jamieo

Melting Slicks

Joined: Oct 2010

Posts: 3,032

Likes: 795

From: Tollesboro Kentucky

It's nice to have a diagnostics guy around instead of guessing and changing parts.That gets expensive in very short order.

Aug 6, 2023 | 07:54 AM

drewz06

thing knower

Joined: Mar 2017

Posts: 3,404

Likes: 943

From: wpb

agreed! definitely one of the heroes on this site....

thanks c5d!

Aug 6, 2023 | 08:30 AM

Turbo6TA

Race Director

Joined: Mar 2011

Posts: 13,262

Likes: 3,151

From: SW Florida

2021 C6 of the Year Finalist - Modified

Quote:

Originally Posted by Mike98SilVert

Thanks Rob (C5 Diag) for giving my C6 a scan check-up today. Rob really knows his stuff and has all of the latest diagnostic tools.

That's a fact !

Aug 6, 2023 | 09:00 AM

C5 Diag

Moderator, Tech Contributor

Joined: Sep 2013

Posts: 15,643

Likes: 4,082

From: Cape Coral, Florida

Quote:

Originally Posted by Mike98SilVert

Thanks Rob (C5 Diag) for giving my C6 a scan check-up today. Rob really knows his stuff and has all of the latest diagnostic tools.

Mike, my pleasure !!…so your battery and charging system are fine…you have the correct OE lead acid battery and not an AGM (01-03 Z06 OE was AGM) which can cause charging system issues because the charging strategies are different on those 2 types of batteries as far as the ECM is concerned…we had a full electrical load on the car and your battery was charging at a steady 13.8 volts…hardly any voltage drop on the positive and negative battery connections…if you did see your voltmeter drop momentarily to 12.5 volts that voltage doesn’t come from the battery directly but from the Ignition 1 voltage circuit…the cars voltmeter will always read about .3 to .4 volts lower than the battery…if you want to swing by next weekend I can swap out your battery cable terminals with those better ones !!

Last edited by C5 Diag; Aug 6, 2023 at 10:03 AM.