Part replacement and labor was covered under emission warranty." "Check engine light came on, took to it to the dealership, required replacement of the diesel emission fluid heater located in the fuel tank. "diesel exhaust fluid tank and dispenser" which kept me from using the vehicle for a couple of weeks. This caused the vehicle to go into a limp mode. "The heater in the DEF tank became inoperable. The replacement cost was covered by the warranty." "Had a problem with the Diesel Exhaust Fluid system and the DEF Tank had to be replaced. (2015 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel) A dealer replaced the entire tank reservoir with the associated equipment inside the tank." OBD indicated a heater failure in the DEF tank. "The diesel exhaust fluid (DEF) system failed. (2015 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel) GM extended the warranty coverage at dealerships request and paid $ 5900.00 for repairs." Also the def tank heater failed at 59000 miles, tank and heater were replaced. Ring the bell, turn on All Notifications so you don't miss any of our videos."EGR cooler failed at 60000 miles, EGR cooler, EGR and EGR sensor, wiring harness were replaced to correct. If you enjoyed this video or it helped you out, make sure you subscribe to our channel. Just make sure you change your oil and it's gonna last a long time. They don't stretch or anything like that. The timing chain that they do have never has a problem with it. They don't have a timing belt that you have to worry about breaking. But normally, you're gonna have to try to be a little bit creative to get that off. So there is still something to bite if you could pull that off, and try to get a twist socket on there. So the bolt head broke off flush with the manifold. You can see the good one right there, and you can see that the head of the back one is missing. And in worst-case scenario, you have to remove the head and have a machine shop fix it for you. And some people like to weld a nut on the end, some people like to drill and re-tap the hole. Pull the wheel well out and remove that manifold. You're gonna go in through the wheel well. You pull the exhaust manifold off and try to extract that bolt the best you can. It is somewhat difficult to replace those. The exhaust manifold, especially, on the driver's side, the back bolt, the head of the bolt if you see that it's missing, then that bolt is broken off. There's also the wiring harness that goes to the NOx sensors, that is replaceable. Because when you take the intake off, you don't want to reuse those gaskets. To replace those, you're gonna need to remove the intake, and make sure you get new gaskets. You probably won't even have any drivability issues at all. Those are underneath the intake, and the symptoms you're gonna have is a check engine light. While we're in this area, let's talk about the NOx sensors. Then there's six bolts that hold the water pump on, and you're gonna take off a bunch of hoses. Take this hose off right here, the snorkel, then take this fan cover off. You're gonna drain the coolant down near the radiator. To replace the water pump, it's fairly easy. Sometimes the water pumps leak, and they just need to be replaced. The first thing we're going to talk about is if you have a coolant leak coming from the front of the engine, then most likely you're gonna need a water pump. In this video, we're going over the top problems with the engine. Here we have a 2001-2006 Chevy Silverado 2500HD with a 6.0-liter engine in it.