I have a 2004 Chevy Venture with a new battery and a new alternator that I recently put in. I had this problem before I replaced the alternator and battery.
In the beginning it would take a week of sitting (I have been unemployed so I only drive when absolutely necessary) before the battery would go dead. From day one after purchasing this vehicle the electrical system always seemed low on power. Ie; power windows going up slowly, hard starting due to what seemed like low battery juice, dim lighting, etc.
I did read something online about a battery drain issue associated with the power sliding doors (PSD), but the information was very vague and didn't find any more info about this anywhere else.
I have cleaned and physically inspected all connections, tested for a good ground, etc. The only other thing that I suspect is the factory alarm system (light on dash constantly flashing after vehicle is off and locked).
Any help or suggestions would be greatly appreciated.
Ps. I would donate, but I am unemployed currently. Will in the future when I start working again.
Sunday, December 4th, 2011 AT 10:12 PM