01-04 Chevrolet GMC 2500HD DURAMAX 6.6 LB7 ECM ECU ENGINE COMPUTER 12210729

Here we have a good used engine computer removed from a 2004 GMC 3500hd. This will fit all 01-04 trucks with the diesel LB7 engine. No damage, ready to use but could require programming to your truck. Make sure this part number will work for your truck.