Verify the VIN that is automatically read from the vehicle (compare it to the vehicle VIN plate) or manually enter the VIN. An SPS warning message may appear to warn that you must input the VIN number.
a) booster pack, but not a battery charger!ħ. Make sure the vehicle key is in the run position and the battery is fully charged. Then make sure the scan tool displays the GM Reflash Pass-Thru Mode screen.ĬAUTION: Do not change the baud rate after starting the programming process. Use Exit to return to the Service Programming screen. #Ecm programming Pc
Set the baud rate for the PC by selecting CONFIGURATION > I/O management > Pass-thru > Properties > Baud >38400, 57600, or 19200 (whichever works best) >OK.
For the Next Generation scan tool, press the power key to turn on the scan tool and then select GM SPS Reprogramming. For the Tech 2 Flash, press the power key to turn on the Tech 2 Flash and then make sure it displays the version number screen. This displays a connection instructionsĪ) Follow the instructions on the window. It is not necessary to enter a VIN.ī) In the Vehicle Data area, for each item, click the down arrows (at the right side of each line) and select the correct options for the vehicle salesmake, model year, vehicle type, car line, and engine type(s).Ĭ) When finished, click the Next button. This displays the Determine Vehicle window.Ī) Skip the VIN area. Note: The OBPA option applies only if an off-board programming adapter (J41207-C) is available for the Tech 2 Flash.ĭ) Click the Next button to continue. Select Replace and Program ECU to program a new ECM.Ĭ) In the Select ECU Location area, select Vehicle. Select Reprogram ECU to reprogram (reflash or calibrate) the selected ECM (ECU).
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