When you speak of re-flashing the ECU and ECM, this will involve an electronic deletion of read only program before downloading new and more updated map information. Also, if the ECU or the ignition is going to be replaced on your vehicle, a re-flash service will also be necessary. This is when it becomes important to re-flash ECU and ECM. When you accidentally lost the master transponder key on your vehicle, there will be no interface to make a brand new key. This means that loss of electric power is not going to make the chip lose the programming data. The ECU is basically an Electronically Erasable Programmable Read Only Memory or EEPROM computer chip which means that the chip will retain the data with no periodic electronic power. Need it faster? EXPEDITED shipping options are available at checkout, and will ship within 24 hours.The ECU or engine control unit, or also known as the ECM or engine control module refers to the digital component that it embedded in many of today’s latest vehicles which run a program which holds, controls, and reads things such as O2 and CO2 sensor output, key data, engine performance, engine RPM, timing variable valve, fuel to ratio, and so much more. Price includes FREE ground shipping, after 48 hr processing/programming time. We can also supply a VIN for custom non-factory projects.

Your Duramax VIN will be required for the latest factory released update, kindly provide your VIN with your module, or contact us. If your module is not serviceable, this charge will become a credit applied toward any hardware purchase or programming service. Since the GM database fees are charged to us before programming, this service is non-refundable.

Local drive-up and drop off service available, contact us for an appointment before placing your order. This service is normally performed on our bench after you ship your module. This VIN-based factory programming service assures that your module will “plug and play”, error free with the latest update for your specific vehicle options. A new, refurbished or used ECM does not contain the correct code for your specific vehicle configuration.

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