Due to the problematic CP4 which is found in the 2011-2016 LML Duramax.  We have a  CP3 conversion kit that gives you the option to select your own CP3 pump for your application.  Our kit provides you with all of the hardware you need to adapt a LBZ/LMM based Bosch CP3 to your 2011-2016 LML Duramax.