what causes my battery to drain over night

15

Asked by May 19, 2017 at 04:36 PM about the 2004 Pontiac Grand Prix

Question type: Maintenance & Repair

bought a new battery last night this morning it was dead.

5 Answers

2,015

Either you or someone could have left the ight on in the cabin by not closing the door......or there is a short that is draining it. Did you add any security system or a different set of speakers//radio recently? My son had a gent place a new set of speakers and the same thing happened to him.

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2,015

Lastly I would check the alternator. i had one go bad on my truck and i charged the battery on it and tested it and everything and it was just the alternator

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69,465

Your Grand Prix has battery run down protection. So it has to be something the computer can't "see" like was mentioned above. For example if I'm working on my 2000 model and have the doors or trunk open longer than 10 minutes the computer shuts down the lights in those areas. HTH. -Jim

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Best Answer Mark helpful
15

Thank you it was the battery cables...

1 of 1 people found this helpful.
69,465

You're welcome. Glad to help. Thank you for letting us know and the best answer click! -Jim

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