Questions & Answers for: GMC battery voltage

...battery voltage should be between 12.5 and 12.8 volts.(You will need to use a voltmeter for this testing procedure). If the voltage is not up to specs, replace the battery asap. If the battery is ok ...

...battery voltage. and turn on the headlights to see if they are still bright. If the voltage is at 12 volts DC the battery is OK. One very simple test of a charging system is to charge the battery, ...

...voltage at battery. It should be greater than when the vehicle wasn't running. With vehicle running turn on the lights and heater blower, does voltage stay up or go down? Voltage should be at ...

battery voltage, or low charging voltage?If the charging voltage is around 14v, then the alternator is fine. If around 12.5, then replace.If the battery voltage at rest is less than 12.5, then replace

...and there is no change in voltage its stuck at 9 to 10 volts. Are you saying the voltage at the battery posts is 9 or 10 volts with the cables removed ? Have you charged the battery with a charger

...battery, with engine running, voltage should be 14 to 15-volts , then turn on headlights voltage should drop & then come back up if charging system is working properly. if voltage exceeds normal ...

...connections are tight. INSPECT BATTERY CABLES/TERMINALS BATTERY VOLTAGE ?? WITH KEY IN 'CRANK' POSITION,TEST VOLTAGE TO STARTER SOLENOID 'EXCITEMENT' TERMINAL (SPEC BATTERY VOLTAGE SHOULD BE

...battery voltage while engine running good is 13V to 14V then over charging is 17V to 18V DC if ok battery gauge could be defect if not ok then look for stuck pulley on alternator belt by removing the ...

...terminals. Then do a battery test first. High charging voltage can be caused by high resistance at the terminals or inside the battery. A battery test will show whether the battery is good or

...battery charge voltage for modern Lead Acid batteries is 14.4volts. Anymore and it may damage the plates causing a discharge condition due to lead oxide shorting out the plates.In my 1958 Series 1 ...