How to Fix a Leaking Duramax Oil Cooler (LB7, LLY, LBZ, LMM)

USE CODE ARKELECTRIC FOR 15% OFF YOUR ORDER!!!!! CHECK OUT AUXITO PRODUCTS HERE: https://www.auxito.com/?ref=arkelectric ** Do NOT leave the tube out between the oil cooler and water pump when reinstalling the cooler like I did... Driver side motor mount will have to be removed in order to get it back it. ** If your Duramax is leaking oil near the rear of the engine, the oil cooler might be the culprit. In this video, I walk you through the full process of replacing a leaking oil cooler on a 2005 LLY Duramax. This repair is very similar for LB7, LBZ, and LMM engines as well. I cover tips for accessing the cooler, cleaning surfaces, and reinstalling everything properly. ⚠️ Common signs of a bad oil cooler: Oil dripping near the back of the engine. Coolant dripping near back of engine. Coolant in the Oil (in extreme cases)    / @ark2002