My 91 corvette w/150000 miles will not allways hold a charge.I can charge the battery for thirty minutes, start the car and not have a problem for days or have the problem the next day. New battery & alternator. Stock engine 350cid : (
Best guess. If your Corvette has vanity mirrors? Check to make sure that the covers are closing properly. Or the switch is closing for the light on the visor. Park the car in a dark place. With the motor off and see if you can see a light staying on. The drain on the battery is slow. Also check the door panel light switches. Alot of people press them and do not know that they are on. When the eye on dash or sensor is dirty it will also turn the interior lights.