After scratching my head and taking my 2008 Z06 to the Chevy dealer for dead batteries and having to reprogram various computers many times, I finally found the problem with the Vette. It's the Mild To Wild remote exhaust system I added to it. Ironically, I always removed the M2W when I took the car in so as to not have any warranty concerns. So the shop could never find the problem. We blamed it on On-Star and all the crap that automatically fires up in the middle of the night.
Well it's the M2W system. There is now a work around that says it's "no current draw" but that the exhaust always starts "open" and you have to close it manually. I just shit canned the whole thing. I've jumped, charged and changed the battery too many times. Got the battery free under warranty. It'll start after sitting in the garage 3 weeks with the radar detector on now.
Anyone know of another system that uses the built in garage door opener and doesn't use any juice?
Ed