How do you regen a Duramax diesel?
The Duramax engine needs to see steady cruise speed, not stop-and-go traffic, in order to properly enter regeneration mode. You must travel above 30 mph for at least 20 minutes until the clean filter message goes off. Periodically engage in steady speed cruises to insure your DPF regenerates.
What does Regen mean Duramax?
During a regen, fuel milage will generally tank, and you’ll be able to feel a difference when driving the truck. Engine temps can run a little higher than normal, and you’ll be able to smell it, and feel it from the outside of the truck.
How long does a regen cycle take on a Duramax?
Unfortunately, far too often it does not go quite as smoothly. First, as a general rule of thumb, a forced DPF regen should last approximately 45 minutes.
How do I know when my 2020 Duramax is regenerating?
You will notice it plummet by 4-6 MPG when the regen is happening. You will know the regen is over when the MPG starts climbing back to normal. If you stop, either parked or at a red light or something, the RPM at idle will be around 750 instead of 500 RPM.
How does Duramax regen work?
Active regeneration occurs when the engine senses that the DPF needs to be cleaned as it is approaching maximum capacity. When active regeneration occurs, fuel is injected into the exhaust stream via the HCI to increase the exhaust gas temperature so that the particulate matter can be burned off.
How do you reset the Duramax def system?
To reset the system, press and hold the thumbwheel for two seconds while Fuel Filter Life Remaining is displayed on the DIC.
How often does a new Duramax Regen?
Registered. Yup, about once per tank, takes 20 minutes and a gallon of diesel, and only burns over about 25 mph. Also needs to be at or near full warm operating temp. I can tell when mine’s regenerating 4 ways.
How long will 3.0 Duramax last?
If you want to know how long a Duramax engine will run, you should expect it to last as much as 300,000 miles before needing any major repairs.
Can I regen while driving?
Your truck can undergo the regen process properly while running, and will in fact, usually do so. Your diesel particulate filter, or DPF, undergoes routine passive regen as needed during steady driving. Active regeneration also occurs and happens best during highway driving speeds.
What happens if you don’t Regen a truck?
Regeneration, or regen, of the DPF filter, is the process that burns the soot accumulation that is inside the DPF filter. If you can no longer start a regen then you will eventually get stuck in a derate which will then lead to an engine shut down.
How much DEF does a 2021 Duramax use?
The DEF tank is approximately 5 gallons (18.9 liters). On pickup trucks, the DEF tank fill nozzle is located on the passenger side, under the hood and is sealed by a blue cap.
What happens if you get diesel in DEF tank?
What Happens If I Put Diesel into a DEF Tank? Diesel is less dense than DEF, so it will float on the DEF. If it enters the SCR catalyst, significant damage can occur that may require servicing or even worse, a (costly) replacement of the catalyst.