I have a 2005 G6 GT with 95K miles. The battery goes dead after a couple of days. I had it at the dealer today for 3 unrelated recall issues and had them check the charging system and the battery. They said something in the BCM is causing a current draw discharging the battery, and wanted $550 to repair. Since the car is basically in storage I told them not to repair it. Has anyone else had this problem, or any recommendations on where to buy a new one........I realize it needs to be programmed with the VIN but pretty sure I can get one cheaper than $500. Thanks!