2002 GMC Sierra "battery voltage drop" Questions

...voltage to battery symbol when key is on , then when it starts voltage from voltage regulator inside alternator goes back on that circuit shutting off the light . Voltage on both sides of the light ...

...voltage gauge drops and alternator squeals when raising or turning plow. I changed alternator to 140 amp but still does the same thing INSPECT BATTERY ELECTROLYTE LEVEL INSPECT BATTERY ...

...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 ...

battery & see if the voltage drops as before, or has stabilized. That will tell you if the truck is draining the battery for sure of if you have a bad cell. If it is the truck, you will need to go

...voltage at the battery terminals.It should be between 13.2 and 14.4 volts DC .If it is the gauge has a feed problem,like a bad wire.This bad wire will heat up,after the truck is running for a few ...

I am getting voltage drop itermittantly just when it gets really cold out. the lights go dimmer and you can hear the heater fan drop also Maybe you need a battery that has more cca.

voltage issue with my 2003 gmc 1500hd 6.0L. I replaced the battery last week and had the alternator checked this past weekend and it checked out fine. Problem: At idle speed the voltage drops low when

...battery to the positive side of the starter and nothing happened. tapped on it with a screw driver and nothing happened. just a click. Did you try moving the gear selector to neutral ? Manual or ...

Voltage Truck show its charging at about 18 volts. When warmed up drops down to about 16.5 volts. Changed Altenator and battery and still doing the same thing. Any idea why it wont charge at 14 volts?

...battery is old and the voltage drops to much as the starter pulls Amps to turn the engine, it may be pulling to much and starving voltage for the fuel pump to run properly. Good luck and keep me ...