Battery draining overnight?

1991 CHEVROLET SILVERADO
178,000 MILES • 4.3L • 6 CYL • 2WD • AUTOMATIC
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MICHAEL NEEDS HELP
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I recently replaced the alternator and before that the power steering pump along with plugs, plug wires, battery. I've gone through everything I can think of and still the battery (the one in it is the 3rd one since I started) is still going dead overnight. I charge it and it'll crank right up only to be dead the next day. I have put the digital multimeter on it and the battery reads 12.7(the battery was brand new) and reads 13.9 when I crank it up. I have checked the fuses and no blown there. I understand that it's probably something I did that somehow left a circuit open and drains the battery, but I am at my wits end as to what.
Jan 24, 2023 at 10:11 AM
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MICHAEL NEEDS HELP
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  • 23 POSTS
I found the problem with my truck battery wouldn't hold the charge. After spending several hours chasing, I thought, "well take the battery off and this is what I got".
Jan 25, 2023 at 2:08 PM
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STRAILER
  • Experienced Mechanic
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Wow, great find! So, the battery was defective it happens, and you say three batteries in a row did this? Please check the engine to frame/body grounds (ground strap). Use 2CarPros anytime, we are here to help. Please tell a friend.
Jan 26, 2023 at 2:47 AM
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