Here we have a good used transmisison computer module removed from an 2023 Chevrolet 3500hd with the 6.6 Duramax. Guaranteed to be in good functioning order but will require programming to your vehicle, please review all of the photos as you will get the exact item pictured. This will ONLY fit 19-23 trucks with the duramax engine and the matching part number. if you need any parts just inquire.