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Every year, I store the vette in the garage over the winter, put a battery tender on it, cover it up, etc.
Last week, I went to start the Corvette to move it into storage position in the garage, but it would not start. Voltage warning and battery dead. I thought no big deal because I will be trickle-charging it anyway in storage and would just deal with it in the spring.
Before I put the trickle-charger on, there was a faint high-pitch whining or whistling sound coming from around the battery (computer module?) area. I went to check the mileage first by turning on the light switch to view the odometer, and the whining stopped.
I put the trickle-charger on and the whining went away but then returned that evening.
Eventually, the faint whining/whistling went away again for a few days until I noticed again today.
Not sure what this whining sound is even without the trickle charger on.
C5 z06 corvettes were known to whistle from the intake--no harm--i would guess your hearing that with hood open--
Not sure I understand. Car is off. Right now sound seems to be coming from middle-passenger side of engine compartment. Initially could hear it with the hood closed also. Now its pretty faint.
Wondering if I should fully charge the battery now?
Last edited by mike98vette; Dec 14, 2016 at 09:54 PM.