04 GTO voltage issue

[Wheelin]

I'd check your flux capacitor or maybe the muffler bearing?

[Karr]

They looked fine when I checked them last night

[NateZ28]

I had the same issue, on my 99ss, Turned out to be the clip that clips onto the alternator / voltage regulator...but could be a ground, very frustrating good luck

[Karr]

I appreciate all the info. I'll look into all of those possibilities

[Roca Fella Bryan]

Originally Posted by ej1bmx

You should probably just put it up for sale with "no issues" and hope somebody from CSS buys it.

[Lt. Dangle]

I'd check my wife

Regulated

[Karr]

My buddy Brett looked into it a little more and said ground G102 could be causing the issue. I've googled and yet i still can't seem to find the location of it. Anyone have any ideas?

[240Jeff]

Can't find a copy of the factory service manual online?

[Karr]

Ending up getting my hands on one. Spent an hour cleaning the ground that was the suspected issue and still no results...FML.

[bestracing]

Originally Posted by Karr

I threw a voltage stabilizer on the battery and it actually helped somewhat. Maybe I don't have enough juice?

Typically with a GM the flickering lights is caused by a bad solder connection on the BCM (hair line fracture).

Being that you checked it, I'd say your Alt isn't supplying enough current during idle. Eventhough you might have a 110 amp alt. most don't supply that kind of current at idle. Add an underdrive pully and the problem gets worse.

Make sure you have a good chassis to engine ground as well

Also, the Auto Zone checks is usually at speed and doesn't check the full range. You need to check the alt. output with an oscilloscope. I had a bad alt that tested good at Auto Zone but when I hooked it up to my analyzer the ripple was bad.