As many of you may know my father passed away not to long ago and my mother is now trying to sell his truck. The truck is a Chevy Cheyene 1500 with a Vortec V6 engine. The truck is currently setting in her driveway with a For Sale Sign. My problem is that after it sets a few day's without being started the battery becomes to weak to turn the motor over. I know it's not the battery as it is brand new. I would not think it is the alternator causing the battery to drain as the truck is not being driven. He does have a CB Radio and Backup lights that he wired but I do not think they would drain the battery down? Could it be the starter? Any suggestions as to what I should be looking for?