my battery dies 4-5 times a week. i have replaced the battery...dealer says there's no draw on it when the ignition is turned off and the alt is ok.
its gotten to the point where i carry a spare charged battery with me to jump my truck off of it with jumper cables each time it dies.
the dealer blamed it on my satellite radio and radar detector which both plug into the cig lighters.....but i now unplug them all the time, and it still dies.
damn chevys.
You either have an ASD relay that sticks, or you have a BCM defect and a programming issue...
Our 2007-2009 3500 series vans have about a 25% failure rate...
The ASD relay is "auto shut down" and runs power to the ECU and other accessories.
I Have also seen the trailer plug on the factory tow package short out, this gets pretty intermittent too..My dads truck did it (2001 Silverado)...
Nissan does not make batteries BTW...

GT