1999 Buick LeSabre Q&A
1999 Buick LeSabre Question: Why does the volt light on the dash come on?
I replaced both the battery and the 140 amp alternator in this Buick v6.....now the volt light comes on 10 seconds after engine start...the engine runs fine, car runs like new, no starting nor charging problem...took alternaor to AutoZone for check and it passed all checks....putting out 14.67 volts at battery and at the back of alternator....belt is tight, does not slip. Both batter and alternator are new...even checked the connector that goes to the back of the alternator...it's fine, no breaks in wire. How can I get that annoying volt light on the dash to turn off.....the charging gauge on the dash shows charging at 14.67 volts....any help would be great....is this car save to drive now with the volt light on or should I just put a piece of black tape over it? - Buick Grand National
try disconnect battery. before hooking up again, coat both post with petrollium jelly. wait a few minutes before reconnecting. - arturo08
14.6 is high voltage for charging. I would check alternator unit for worn brushes or bad diodes. The light works both was for overcharging and under charging. I would say in this case it is sensing overcharging. - potomaccreek