How do you clear the fault code on a GMC?
Hold the negative battery clamp and wait for one minute. This waiting period will clear the computer’s codes.
How do you reset the check engine light on a GMC Sierra?
Disconnect the Battery You will then need to put your key into the ignition and turn it to the “on” position about three times. Ideally, this will clear the data, turning off the light. You can then reconnect the battery and turn the ignition on. After about a minute, the check engine light should be off.
How do you clear codes on a Duramax?
Then hold the positive and negative cable together off one of the batteries for 10 seconds. This will completly drain the system and clear any codes that it may have. It should work the same with a Duramax.
How do you reset the diesel exhaust fluid on a Chevy?
To reset the system, press and hold the thumbwheel for two seconds while Fuel Filter Life Remaining is displayed on the DIC.
What does it mean when it says Exhaust Fluid Quality Poor?
A dealer may encounter a customer concern of an Exhaust Fluid Quality Poor message displayed on the DIC. The dealer may or may not find DTCs stored. The Exhaust Fluid Quality Poor DIC message notifies the customer that the ECM has detected a drop in the SCR NOx reduction efficiency.
What does service exhaust fluid system mean?
Service Exhaust Fluid System (Tamper) – Displays when a Diagnostic Trouble Code (DTC) sets related to the DEF system that is interpreted as tampering with the system. Exhaust Fluid Range X MI (KM) – Displays when the DEF tank has a range of 1,000 miles (1,609 km) or less remaining.
How do you force a Duramax regeneration?
Drive at a sustained speed for about 20 minutes. 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.
Why does my Duramax Regen so much?
The usual cause of frequent regens without a CEL, is a semi plugged DPF. If you have a CTS II monitor, you can measure the DPF backpressure yourself. The max you should ever see is about 3psi. I think the DPF is warrantied for 7 years, 70k miles… but you better check.
How do I know if my 2020 Duramax is in regeneration?
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. The truck just “feels” different when regen is in effect. The engine rumble and exhaust sound is deeper.
Why does my truck Regen so often?
Your DPF regenerates because of excessive exhaust soot overwhelming the DPF. Exhaust soot is the product of incomplete combustion, the soot is actually partially burned fuel. Soot creates back pressure and the regeneration is triggered and your headaches begin.
Is the 3.0 Duramax worth it?
So far, highway fuel economy numbers have, in general, come up short of EPA estimates. That said, they have proven higher than what people driving similarly-configured 2020 Ram EcoDiesels and Power Stroke F-150’s are seeing. And from an acceleration standpoint, GM’s 3.0L Duramax is the clear winner.
Is the 3.0 Duramax made by Isuzu?
The Duramax 3.0L I-6 is a turbo-diesel engine produced by General Motors for use in various vehicles, primarily full-size half-ton pickup trucks and potentially SUVs. Unofficially known as “baby Duramax”, the engine is an all-new design from the ground up.
How much HP does a 2020 Duramax have?
Then there’s the legendary Duramax 6.6L V-8 Turbo-Diesel, making 445 hp and 910 lb-ft of torque, coupled with an all-new Allison® 10-speed automatic transmission.