1992 gmc new battery, new alternator. battery goes dead after setting for two days Please help

10

Asked by Apr 26, 2016 at 02:00 PM about the 1992 GMC Sierra 1500 K1500 4WD Standard Cab LB

Question type: Maintenance & Repair

After putting in a new battery and alternator my battery goes dead in two days.  Anyone out there have any ideas?  Thank

4 Answers

12,415

Probably a parasitic draw, why did you change the Alternator no output? was it bench tested or did you check it at the battery for 13.2-14.8volts..how long does it take to discharge the battery overnight or in minutes or hours? I suggest checking ALL grounds and connections AGAIN

10

shorted diodes in the alt and that took out the battery

10

tested at the bat, ohm meter showed continuity from disconnected bat terminal on alt to alt case.

10

battery goes dead in three days

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