Originally Posted by Blue 92
Did you have it load tested?
Sounds like a bad connection. The C5 is ground sensitive and there are more grounding points than you would think.
Bill Curlee has a great post on locating and checking ground points here: http://forums.corvetteforum.com/c5-t...o_threadsearch
Originally Posted by slvrzo6
I'm almost Positive it's your IGNITION SWITCH!
The contacts have become Dirty, and is not allow a full contact.
I had this same problem, and the same symptoms your describing. I did the Fix following Bill Curlee's Advice, and everything has been good for some time now. The Fix looks more Complicated than it is. Took me about 2 hours.
Here is the Fix
Great info on grounds and switches but eliminate the battery before you dive into this pit! Don't ask me how I know,,,,unless you need to,,,,and then I will help all I can!
If the battery change doesn't hook you up, send me a pm!
p.s. Doesn't matter how old your battery is. Even new ones fail from time to time!