Here we have a good used A40 transmission control module removed from an 08 GMC 2500hd 4WD with a Duramax, this will fit all 06-08 Duramax with the 6sp ONLY unless you are doing a conversion, Excellent functioning condition, ready to bolt in. Make sure this will work for your application BEFORE purchasing. This may require programming to work properly in your truck. Removed from a running and driving truck and guaranteed to work well.
