04 05 GMC CHEVROLET SILVERADO 2500HD 3500HD 6.6 LLY ENGINE ECU ECM 12244189

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Here we have a good used engine computer removed from a running and driving 04-05 Duramax 3500hd 4wd with the lly engine, will fit gm trucks with the LLY Duramax engine ONLY. Please ensure this will work for your application by viewing all of the photos, This may require programming to your vin. Any question please just inquire.