Gm computer reflash update#
Gm computer reflash Pc#

If you are using the Tech 2 scan tool for the passthru procedure, exit the procedure and use the scan tool to scan the vehicle and request the module (controller) information.

If you selected a controller that requires additional information, an information request dialog box appears.If this dialog box appears, do the following.(Otherwise, skip this step.)ДЄ) Obtain the required information using the Tech 2 or Next Generation scan tool as follows: Depending on which controller and programming type you entered, this displays either the Calibration Selection window or a a dialog box requesting more information (reconfigure information, a part number, or the VCI number).ДЎ0. Note: The Reconfigure selection is not supported for all vehicles, it is not recommended to choose this selection.Д¬) Click the Next button to continue. Also select VCI under Select Programming Type to program (calibrate) a vehicle for a different transmission or to calibrate the speedometer for changed tire size or axle ratio.

Gm computer reflash update#

Once the VCI number is obtained, select VCI (Vehicle Configuration Index) under Select Programming Type to update an existing calibration or to program a new controller on new vehicles for which the VIN code is not yet in the SPS database. If a VCI number is required, contact your dealer.First, select Normal to update an existing calibration or to program a new controller.On the Supported Controllers window, do the following:ДЄ) In the Select Controller area, select the controller to program.Д« In the Select Programming Type area, follow these steps: Also, if you need to enter a VCI number, a message appears to tell you so.Д©. Note: If an option window appears, enter all of the information required and then click the Next button to continue. This displays the Supported Controllers window. 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!Д§.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.Д¬AUTION: Do not change the baud rate after starting the programming process. Use Exit to return to the Service Programming screen.

Gm computer reflash 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 instructionsДЄ) Follow the instructions on the window. It is not necessary to enter a VIN.Д«) 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).Д¬) When finished, click the Next button. This displays the Determine Vehicle window.ДЄ) 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.Д) Click the Next button to continue. Select Replace and Program ECU to program a new ECM.Д¬) In the Select ECU Location area, select Vehicle.Select Reprogram ECU to reprogram (reflash or calibrate) the selected ECM (ECU).