Dead battery

Asked by Rut Nov 13, 2018 at 07:31 PM about the 2000 Chevrolet Tahoe 4WD

Question type: Maintenance & Repair

Battery dead
within a few hours
battery charged at
point car is shut
off. Have pulled
fuses can't find it.
At 14v the
discharge is fast
get to 11v rate of
discharge much
slower

1 Answer

157,365

Try charging the battery then disconnecting it and disconnecting the alternator. Isolate the alternator wiring and connect the battery to see if the parasitic draw has disappeared. If it has, the alternator is likely defective and has a shorted or leaky diode.

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