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c5 starts intermittently

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Old Mar 15, 2015 | 10:45 PM
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Default c5 starts intermittently

I have a 2003 c5 corvette coupe with 29,000 miles. It runs great but lately it won't start. I disconnect the negative battery cable, wait about 20 sec reconnect and it starts. Might start again 10 times and then nothing not even a click. I had it serviced and it happened at the Chevy dealer. They checked the battery and cables said it was fine battery is 3 years old. A week later same thing happened?
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Old Mar 15, 2015 | 11:43 PM
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Thanks for the response. The security light was on and I cleaned the key pellet and light is now off, but still starting intermittently. I am surprised the dealer did not check the other symptoms you mentioned.
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Old Mar 16, 2015 | 10:15 PM
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I have a staring issue with my car. I cant track it down but after reading I learned that there is something in the vats system and if I wait 3 minutes then start the car it, it starts with no problem. I am not saying you have the same problem as me but next time, don't do anything other than turn it off and wait 3 minutes and then try to start. See what happens.
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Old Mar 17, 2015 | 10:59 AM
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If the key resistance is not read to be correct then the BCM will not let you try again to crank the car for 3 minutes.

Could also be the ignition electrical switch.

We can help with more diagnostics if needed before you start throwing parts at it.
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Old Sep 7, 2015 | 06:43 PM
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Default Clunking sound

I have a 2003 C5 with 28000 mi, when i make a left u-turn there is a clunking sound in the front?
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Old Sep 9, 2015 | 07:48 AM
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Originally Posted by topfuelr
I have a 2003 C5 with 28000 mi, when i make a left u-turn there is a clunking sound in the front?
Start a new Thread on that. It has nothing to do with this issue.
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