There are a few things that you can do if your Duramax is experiencing service or system message issues. In this article, we will provide you with a few tips on how to clear those pesky messages. From diagnosis to repairs, read on to learn everything you need to know about service and system message issues on your Duramax.
What is Duramax?
Duramax engines are built to last. They feature a variety of technologies that allow them to provide Ruggedized Performance and Reliability. Duramax engines have been specifically designed for use in medium-duty commercial vehicles, including trucks, buses, and vans.
How to clear service def system message on Duramax?
If you are experiencing an issue with your Duramax, there is a particular service def system message that you may need to clear. To do this, you will need to remove the code from the ECU and reboot your vehicle.
To remove the code from the ECU, you will need to access the Computer Control Unit (CCU) located in the engine bay. You will first need to disconnect the battery wires and then remove the cover of the CCU. Once in, use a multi-meter to check for voltage at pins J1 (map sensor), B1 (engine control module or ESM), and K1 (fuel injection). If any of these readings are low, then you will need to clear the code by removing and replacing resistor R3. After clearing the code, reattach all power wires and replace CCU cover.
Conclusion
If you’re experiencing difficulty with your Duramax fuel system, there are a few simple steps that you can take to try and rectify the issue. First, check for any obstructions in the fuel lines or filters. If these are not the cause of the problem, then it’s likely that something is causing the system to malfunction. In this case, it might be best to consult a professional technician in order to get your vehicle back in working order as quickly as possible.