(Used) 2006 GM 6.0L ENGINE ECM- Serial Number: 86YPUHR171970415, Part Number: 12589161, Service Number: 12602801, YPUH Displacement: 6.0L, Horsepower: 300, Engine: P-42355, Truck: 668835, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921