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03-17-2025, 10:07 AM
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#1 |
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Voltage on dash question
When u go to performance dash, u have a choice of oil pressure,temperature
And voltage, my question is; voltage seems to go From 12.4 v to 14.2 volts, usually it hovers at 12.4 v When cruising, but when deceleration from 70-80 Mph,(2000-2500 rpm’s) voltage goes up to approximately 14.2, then Settles down to 12.4v, is this normal? |
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03-17-2025, 10:55 AM
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#2 |
  
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Yes, it has charge on demand or Intellacharge system. It is normal.
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03-17-2025, 03:30 PM
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#3 |
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Drives: gas powered Join Date: Jan 2019
Location: TN
Posts: 325
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Yes like above its normal.
12.4 VDC is 80% charge thats what the car is shooting for. https://www.gmupfitter.com/wp-conten...3-Zevo-600.pdf Flip your headlights on while driving it should goto 13.9 VDC.
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03-23-2025, 07:57 AM
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#4 |
        
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,824
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normal...seems weird but it is an "on demand" type charging system. It reduces parasitic drag for the alternator to charge only when necessary.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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03-23-2025, 11:54 PM
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#5 |
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Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 5,156
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The variable voltage also keeps from overheating/overcharging the AGM battery, which is sensitive to such things.
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