why would voltage light just started coming on, car wouldn't start once, then on 2002 Buick LeSabre

started after about 12 hours of sitting, lights in car came on, battery is about 4 years old

Asked by for the 2002 Buick LeSabre
Bad alternator,isn't charging battery while your driving,u gotta check volt of battery with a volts meter while running,
Pos +neg ,should be 14.0 volts...
Believe it or not when you. Run down good battery ,they reguvinate power when they sit.
Thank you, so alternator it is, I truly appreciate your service, we did take the extra money last time to purchase a better battery, are you open to do the repairs? haha
Yeah ,bring it over,lol well have a 6 pack and talk about marriages and these crazy woman ,,and get yelled at ..
Warning ,I am a 2 beer quir ,2 beers ,I'm dun......
well, that sounds like a fine time, however, I think my hubby would get a bit miffed at me. You take care of yourself, thanks again
Shit , sorry , i thought u were a guy, lol..