Duramax 6.6L LBZ/LMM
DSP5 User Guide
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flashing please use [F6: Cal-Flash]
8. Click on the Check License button. This will indicate if the controller is already
licensed or needs to be licensed.
9. Where the controller is NOT licensed, select Activate License to license the
controller.
10. Select Yes to license the controller or No to close this window without licensing
the controller.
11. Select Yes to license the controller or No to close this window without licensing
the controller.
12. Select the Full Flash button to commence the flash.
13. While the ECM is flashing an Elapsed time indicator, an Estimated Time
Remaining indicator, and a Progress bar will display tracking the Flash
progress.
14. When the flash process is complete a countdown timer will be shown. When
prompted perform the following actions:
a. Turn the vehicle ignition Off.
b. Click on the Start button to begin the countdown timer.
c. DO NOT turn the vehicle ignition on until the countdown timer expires.
This time is critical to allow the ECM to perform internal functions after a
read operation.
