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05 c6 dead on side of road

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Old 01-23-2021, 12:56 PM
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Ep1429
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Default 05 c6 dead on side of road

I have been diagnosing a battery drain on my 2005 c6 in this thread:

https://www.corvetteforum.com/forums...ery-drain.html

We were on the way down to the shop to work on it and the car died while I was driving it. I mean, it has gone completely dead, no power to anything and the gauges and dials all froze where they were when it went out.

Does anyone have any idea how I can get it moving again?






Old 01-23-2021, 01:33 PM
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Dano523
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Booster pack on the battery, long enough that is charges the battery enough to get it started/put in a parking spot so it can be flat bed towed to somewhere you can wrench on the car.


As for why the battery died, could be the alternator, but better chances its a problem where the alternator cable wire, that connects to the battery cable wire on the starter solenoid lug, and why the battery was not being charged in the first place. Hence when motor is running, alternator should be pushing enough power to the system, that even a dead battery should not cause the motor to die. Of could be a simple as a blown horn fuse , which the alternator uses for a voltage sensing wire, and why the alternator was not charging in the first place.

If you do have power at the battery at the Fuse box terminal (above 12volts and the fuse box terminal nut tight), then major problems in the fuse box~BCM, with the power from the fuse box not making it way to the BCM and out instead. Hence have seen the bar trace from the engine fuse box terminal to the fuse block wires broken from the nut being over torqued.

Last edited by Dano523; 01-23-2021 at 01:43 PM.
Old 01-23-2021, 01:37 PM
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Ep1429
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Originally Posted by Dano523
Booster pack on the battery, long enough that is charges the battery enough to get it started/put in a parking spot.


As for why the battery died, could be the alternator, but better chances its a problem where the alternator wire, connects to the battery cable wire on the starter solenoid lug, and why the battery was not being charged in the first place. Hence when motor is running, alternator should be pushing enough power to the system, that even a dead battery should not cause the motor to die.
Not the battery, sir. It has 13 V.

I’ve hooked up my Nano to the car and have no communications with anything.






Last edited by Ep1429; 01-23-2021 at 01:39 PM.
Old 01-23-2021, 01:45 PM
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I haven’t found any blown fuses.

In order: Horn/alt sensor fuse, ECM fuse, and BCM fuse (#7)





Old 01-23-2021, 01:57 PM
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The fuse blocks are intact, no blown fuses. The post and the connector both look good.



Old 01-23-2021, 02:11 PM
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Once the fuse box was put back together and the battery reattached, the car came back to life. It must have been that the bolt on the fuse box terminal was lose, though we had to use a ratchet to get it off (more than hand tight). Going to take it down to the shop and finish looking at the starter.

Last edited by Ep1429; 01-23-2021 at 02:11 PM.
Old 01-24-2021, 05:48 AM
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Kt2007C6!
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Originally Posted by Ep1429
Once the fuse box was put back together and the battery reattached, the car came back to life. It must have been that the bolt on the fuse box terminal was lose, though we had to use a ratchet to get it off (more than hand tight). Going to take it down to the shop and finish looking at the starter.
Glad to see you got back on the road, and hopefully to your shop with no further incidents. Sometimes the littlest things can sideline us. My car didnt like the local gas stations RF output and decided not to run or recognize the fob when I was new to corvettes. So I failed to realize the glove box had a slot to remedy the issue. Flat bed took me to the closest shop, and it fires right up. I found this forum that afternoon. Good folks here.
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Old 01-24-2021, 06:50 AM
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Ep1429
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You aren’t kidding. Dano deserves to be declared a saint and given his own holiday, he has been selflessly helping me out for two months.
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Old 01-24-2021, 12:10 PM
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JasonAndrew
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A loose ground will halt everything. Don't ask how I know.

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