Ok, just got off the phone with my dad and my grandpa's '08 Colorado Z71 wont start. He's had the truck about 3 weeks and this is getting to be a daily problem. Been to the stealership twice with the truck and they tell him everything is fine. But when my dad hooked a volt meter to the battery it was turning 11 volts. Nothing was left on in the truck to kill the battery and it starts first try off a jump. I'm thinking he has a bad battery, but I was just curious if anyone else has had these problems.