HouseCallAuto 10/7/2012Your cause is either a bad battery or you have a parasitic drain that is drainiung the battery when the vehicle is parked. If the battery is older than 3 years old, it is your most likely cause. You would have mentioned if the battery was new, so replace the battery. If you had the battery checked and they said it was good, yet the battery is older than 3 years old, do not believe that, buy a new battery.
larry 10/8/2012Take IT to Autozone & have them test your battery.Will doit for free. SOwillWalmart.