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This was pulled from a running and driving vehicle. This ECU came out of a 2002 Yukon XL with a 5.3L engine and 4L60E transmission. The ECU works as it should. Disclaimer: I do not know if ECUs are VIN locked on these trucks. If they are you would need to have it reprogrammed. I do not offer that service. The service and hardware numbers are: 12200411 DNWZ 09386530
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