1996 Suburban alt question

[Eskimomann209]

Howdy Fellas
My Burb voltage gauge read 12V most of the time
Alt woulf drop a few volts here and there battery light would come on
I measured the battery and sure enough it measures 12v while truck was running
So I swapped out the alt
New one reads 14V at the battery while running
All good right?

Nope my OCD is kicking in hard because the
Gauge reads halfway between 12-9 volts
So somewhere around 10-11 volts?
What gives!?

New cluster?

 

[Weston Graham]

I have a 1996 tahoe, and it reads on the gauge 14v when running, 10-12v while sitting (depending if im using it). If the battery reads 14v at the terminals while running then there really shouldn't be anything to worry about. Unless of course, that the gauge is showing that rest of the system isnt getting the full voltage and the gauge actually shows the correct "system" voltage.

 

[Eskimomann209]

Yeah
I'll keep you all posted
I plan on the big 3 upgrade on this beast and see if that's keeping it from traveling into the "system "

 

[east302]

The voltage gauge measures the voltage fed to the instrument cluster from the alternator.

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GM has the following test procedure for the gauge. Don't laugh...

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I have a 98 Tahoe and a 98 truck. Both alternators charge to around 14V. The Tahoe cluster reads around 10V, the truck 14V.

Your alternator readings are good, so odds are it's just the cluster.


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[Eskimomann209]

LOL
Simple and logical test
Exactly what I figured GReAT to see it in writing
Thank you for the Tech info