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

Key Code, How do I get It?

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Old Jul 26, 2002 | 11:05 AM
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Default Key Code, How do I get It?

My friend has a 89 coupe and he lost his only set of keys :( Why he only had one set is another story. :nono: He went to the local dealer and they told him they can't go back to 89 that 90 was as far as they could go. they told him that he would have to bring it in for a couple of hours so they can check the car and see what key he needed. :confused: Is there another way to find out?

Thanks for your help.
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Old Jul 26, 2002 | 11:11 AM
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They can put a device on the car that pretends to be the different resistors in his ignition key to see which one works.
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Old Jul 26, 2002 | 12:20 PM
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Default Re: (scorp508)

Is this something that takes hours to do?
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Old Jul 26, 2002 | 01:44 PM
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Default Re: (Rome856)

I believe there are 15 different resistor combinations. Down time between tries is 2-5 minutes.

You might wanna send the VIN to 18CARFAN. He may be able to pull the build sheet, and get it from there.
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Old Jul 27, 2002 | 12:11 AM
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Default Re: (ZylaRace)

Who is 18CARFAN becouse I live in malta europe and I dont have any chevrolet dealers to cheak my key code and I would like a build sheat of my car :) thank you
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Old Jul 27, 2002 | 12:15 AM
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Default Re: Key Code, How do I get It? (Rome856)

they can fax GM the vin# to get the key resistance. :chevy
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Old Jul 27, 2002 | 12:40 AM
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Default Re: Key Code, How do I get It? (Rome856)

When I bought the Vette from my Dad, he lost both sets of keys (don't ask, long story)! GM said they did not have info back to 1989. So, I had a local locksmith come to my house and find the correct resistance and make me a new key. Total cost was $140. Not too bad all things considered.
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Old Jul 27, 2002 | 02:15 AM
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Default Re: Key Code, How do I get It? (Rome856)


This chart worked for my 89. Just use a digital Multimeter on the metal knub to get the resistance and match it to the chart. You may be off a few ohms +- 10 ohms dependig on the condition of the key and equipment used but you will be able to match it.


http://www.btinternet.com/~ray.quayl.../vatscode.htm. :cheers: :cheers:
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Old Jul 27, 2002 | 02:43 AM
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Default Re: Key Code, How do I get It? (Shonan)

Jeff Kopp, aka 18carfan, can be contacted by email at parts@superchevyperformance.com . The info should still be available from GM Customer Service Center. If anyone can find it, Jeff can.
:cheers:
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Old Jul 27, 2002 | 03:18 AM
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Default Re: Key Code, How do I get It? (Sharky Guam)

if anyone in the southeast florida area needs this done, let me know . i have one of the keycode tools. you can read keys and plug it into the car for identification of which you need. and always a free service to my corvette bretheren. just drop me a email and we can set up. i at one point worked in the repo business, tools of the trade. wish i could help you up there...
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