Posted 5/14/2014 14:54 (#3869978 - in reply to #3869076) Subject: RE: 93 GMC battery drain ?
Faunsdale, AL
0.4 volts doesn't mean much. Could be some leaky insulation on a wire somewhere.
I would bet that the thing that's killing your battery is something different from the dource of the 0.4 volts between negative cable and battery post. Especially since it is sometimes dead and sometimes cranks right up.
93 GMC battery drain ?
