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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 01-17-2011, 11:53 AM   #1
bilydean
 
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How to read the TIS2web.service.gm.com website

I am trying to figure out if my ECM has been updated by going to the tis2web.service.gm.com webpage. I put in my VIN and get back some results, but have no clue on how to read it and determine if my OS has been updated.

Can anyone give some guidance?

thanks
Dean
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Old 01-17-2011, 12:55 PM   #2
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Old 01-17-2011, 01:07 PM   #3
BowlingSS
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It looks like it gives you the Operating System Number and a CVV number. I know GM updates the OS often. If you press detailed summary it will tell you if the OS was updated during the build cycle. I sure someone else knows a lot more. Maybe they will answer. My OS is 12639270 for my 2011 Camaro 2SS/RS built 11/11/10.
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