Urgent 1999 and 2000 pontiac trans am battery trouble - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 3 (permalink) Old 11-14-2009, 11:51 PM Thread Starter
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1999 and 2000 pontiac trans am battery trouble

I have a 99 and 2000 trans am and they both if they set for a couple of days drains the battery down,anyone know what the problem is I need help on this one. Plus the 99 model you have to stall the engine or turn on the air conditioning to get the electric fans to come on any help would be appreciated.thanks
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post #2 of 3 (permalink) Old 11-15-2009, 12:23 AM
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Do you have any aftermarket accessories on both of the cars? Aftermarket accessories like car alarms have a pretty bad parasitic drain from what i've encountered. How old are the batteries? They could just be past their life expectancy date. Usually a good battery will only last about 4-5 years. Then once its drained one good time by say leaving the lights on it'll never be the same.
post #3 of 3 (permalink) Old 11-21-2009, 09:30 AM
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Fist thing that I would do is pull the batteries and have them checked. If they're the delcos still they could be ready to pop. I had 2 delco batteries that bloated and one had started leaking.

Just two slow 4 doors.
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