I'm hoping someone can help me and recognize what has failed on my 1999 Corvette.
No problems previously. I've had it parked in the garage for about a week. When I went to start it the battery was dead. I plugged in a charger and a clicking sound came from the front of the car, seemed somewhere near the air filter. I couldn't find the source of the clicking but left the charger on for a few hours.
When I came back, the clicking had stopped but there was a high pitched whine/whistle coming from the same area. The battery is not providing enough power to light the underhood lights. I disconnected the battery and the sound stopped.
Even though I can't detect any power in the battery, now the high pitched whine occurs whenever the battery is connected. If I fiddle with the battery connection, I can change the pitch of the whine.
Has anybody seen this before? Any suggestions/theories? What's broken?
On the last day I drove the car prior to parking it I had brought it in for the annual DMV inspection which it passed.
Many thanks for any ideas.