1992 gmc new battery, new alternator. battery goes dead after setting for two days Please help
60

Asked by tahiti456 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
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Auto_Centric answered 7 years ago

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

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60

tahiti456 answered 7 years ago

shorted diodes in the alt and that took out the battery

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60

tahiti456 answered 7 years ago

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

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