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04-16-10, 11:48 AM

#31

caddyowner

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Quote:

Originally Posted by kg19989

The blackbox in a car should not be construed as big brother in any way. This data is not transmitted anywhere, is not collected when you go in for service and is not reported to anyone or used for anything UNLESS there is an accident.

Sorry, this is not true. GM routinely collects the data on service visits and compares the software checksums and other indicators to determine if the owner has reprogrammed their engine or transmission control modules. If a owner has a "tuned" module, GM will deny warranty coverage for engine or transmission problems. Folks have gone to buying an extra ECM and installing the stock unit before going in for service.

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04-16-10, 12:59 PM

#32

kg19989

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Interesting...I was always told using aftermarket chips would not void a warranty and that it was illegal for the manufacturer to deny you warranty based upon that. Maybe I need new friends :O.
Glad I have my friends at CL for better info!