C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Aug 18, 2014 | 06:42 AM
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I parked my 93 Saturday went to start her Sunday and nothing. Dash lights all come on when i turn key but not even a click. Cleaned key nothing. Tried spare key nothing. Put battery on charge brought her up to 100% it was down at about 55% ? Months ago a similar problem and it was the chip on the key wiped it with a little alcohol and started. Same time i got a spare just in case. I have never had any indication of a starter problem. I pulled battery to charge and checked/cleaned terms, when i hooked her back up the horn started beeping until i used the key fob. Only reason i mention this is because it hasnt happened before when i had battery in and out. VATS ? Any direction would be appreciated. Dave
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Old Aug 18, 2014 | 02:22 PM
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Still no start. I sprayed contact cleaner in the ignition but still no crank. When holding key on start i did notice the (security) stays on not blinking.
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Old Aug 18, 2014 | 03:19 PM
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So, when you enter the car, with the door open, does the "security" light flash?
When you close the door, does the light stop flashing and go out?
When you insert and turn the key does the security light come on again?
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Old Aug 18, 2014 | 03:20 PM
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Ok so read the second post, does flash when in start position, how about just inserting the key and turning to "on".... also flash?
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Old Aug 18, 2014 | 03:36 PM
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One of the most common issues I dealt with at the Cadillac dealership on PassKey was the pigtail to the ignition tumbler (orange sleeve with 2 white wires inside?) that sends the pellet reading to the CCM, or BCM becomes open right near the ignition switch itself.
This is due to the fact that the first arch to the harness exiting the ignition switch basically is flexed between the movement of the ignition barrel and the stationary rest of it's path through the steering column. Basically is flexed back and forth until it dismembers kinda like a pop can if you fold it back and forth enough.
Pain in the but to replace because you have to swap out all the tumblers to install a new barrel/pigtail assembly.
Real limited space in there too.
Scale from 1-10 complexity = 3
This is the most common finding of PassKey failure while I was at GM dealership.
Many posts talk about the (14?) pellet choices, a simple test is to match your key pellet resistance in a combination of resistors from radio shack, unplug this passkey pigtail at base of steering column and insert resistor ( or little resistor pack) and see if it starts. This is intended as a diagnostic only as if it does start, I would change the tumbler pigtail assembly, they last for a long time, and you won't have to do that again for a while.
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Old Aug 18, 2014 | 03:43 PM
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Originally Posted by 36Volt
One of the most common issues I dealt with ..........
Nice, comprehensive post, 36Volt...... appreciate your forum posts.
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Old Aug 18, 2014 | 03:51 PM
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Try resetting the battery cables.
Simply remove, clean and reinstall.
Sounds too simple, but I've seen this work on some before.

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Old Aug 18, 2014 | 04:05 PM
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Originally Posted by JrRifleCoach
Try resetting the battery cables.
Simply remove, clean and reinstall.........
You may have missed this in post #1 " I pulled battery to charge and checked/cleaned terms".
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Old Aug 18, 2014 | 04:07 PM
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Doh!


Originally Posted by seabright
You may have missed this in post #1 " I pulled battery to charge and checked/cleaned terms".

Last edited by JrRifleCoach; Aug 18, 2014 at 04:11 PM.
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Old Aug 18, 2014 | 04:36 PM
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Originally Posted by 36Volt
So, when you enter the car, with the door open, does the "security" light flash?
When you close the door, does the light stop flashing and go out?
When you insert and turn the key does the security light come on again?
. Yes it will flash until I close door then it goes out. Key on it comes on steady
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Old Aug 18, 2014 | 04:38 PM
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Originally Posted by seabright
You may have missed this in post #1 " I pulled battery to charge and checked/cleaned terms".
I tried again just to say I did. No luck. Thanks Don
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Old Aug 18, 2014 | 05:37 PM
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Originally Posted by 36Volt
One of the most common issues I dealt with at the Cadillac dealership on PassKey was the pigtail to the ignition tumbler (orange sleeve with 2 white wires inside?) that sends the pellet reading to the CCM, or BCM becomes open right near the ignition switch itself.
This is due to the fact that the first arch to the harness exiting the ignition switch basically is flexed between the movement of the ignition barrel and the stationary rest of it's path through the steering column. Basically is flexed back and forth until it dismembers kinda like a pop can if you fold it back and forth enough.
Pain in the but to replace because you have to swap out all the tumblers to install a new barrel/pigtail assembly.
Real limited space in there too.
Scale from 1-10 complexity = 3
This is the most common finding of PassKey failure while I was at GM dealership.
Many posts talk about the (14?) pellet choices, a simple test is to match your key pellet resistance in a combination of resistors from radio shack, unplug this passkey pigtail at base of steering column and insert resistor ( or little resistor pack) and see if it starts. This is intended as a diagnostic only as if it does start, I would change the tumbler pigtail assembly, they last for a long time, and you won't have to do that again for a while.
. Thanks for all the great info. I'll print it out at work in morning. This I phone is better than nothing but...
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Old Aug 18, 2014 | 05:40 PM
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Originally Posted by seabright
You may have missed this in post #1 " I pulled battery to charge and checked/cleaned terms".
How you doing Don always good to hear from you. Dave
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Old Aug 18, 2014 | 06:44 PM
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Originally Posted by davewhtt
How you doing Don always good to hear from you. Dave
Hi Dave..... doing just fine here... wish I could be more helpful getting
you started. I see you are learning about VATS.... might be the solution.

Good luck!
don
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Old Aug 18, 2014 | 07:18 PM
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A good Thief will get that started in less than 30 secs after sitting in the drivers seat
See if this helps up by-pass that and start it
http://www.corvetteactioncenter.com/...rial-pics.html
and on an older system Watch this to get the Idea of jumping/by-passing Vatts
and them ur system

Then drop the driver column cover and find the relay with the large yellow wire and the large purple wire, cut them at the relay and butt connect the two of them together. That takes care of the starter interrupter relay problem! - See more at: http://www.corvetteactioncenter.com/....i7PJwS0R.dpuf
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Old Aug 18, 2014 | 07:33 PM
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Or just measure the resistor on ur key and then get up under the dash and put a resister with that same value in to the wire going to the vats. Tricking the vats into thinking it there thats all there is to it
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Old Aug 18, 2014 | 07:35 PM
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This kid can show ya.
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To No start

Old Aug 18, 2014 | 07:40 PM
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or this kid
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Old Aug 18, 2014 | 07:54 PM
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Good luck and I hope u go the right way and by-pass it. Just remember to email me ur address
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Old Aug 20, 2014 | 07:38 AM
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Thanks everyone for all the help. Ill let you know how i make out. Dave
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