01 Chevrolet GMC SILVERADO 6.6 TCM TCU TRANSMISSION COMPUTER ALLISON 29537441

Here we have a good used transmission computer removed from a 2001 GMC 2500hd with the 6.6 Duramax. Guaranteed to be in good functioning order, but may require programming to your truck, you will get the exact item pictured. This will ONLY fit 01-04 trucks with the Lb7 engine and the matching part number. if you need any parts just inquire.