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Remote Procedure

NOTE: Ensure the PCM is installed in the vehicle and the battery is fully charged before programming.
  1. Connect the Tech 2 to the vehicle and obtain the module information using the following procedure:
    • Connect the Tech 2 to the vehicle Data Link Connector (DLC), with the engine and the Tech 2 OFF. See Fig 1.
    • Turn ON the Tech 2.
    • Press Enter at the title screen.
    • Turn ignition switch to RUN position, engine OFF.
    • Select SERVICE PROGRAMMING SYSTEM at the Main Menu.
      • NOTE: Select REQUEST INFO AGAIN if a vehicle identification number (VIN) was previously stored in the Tech 2.
    • Select REQUEST INFO.
    • Enter the vehicle description by following the on-screen instructions.
    • Turn all accessories OFF and select CONTINUE.
    • Select NO and write down the VIN if the VIN is incorrect. Verify that the correct VIN is entered on the Tech 2 and select YES.
  2. Turn OFF the Tech 2.
  3. Disconnect the Tech 2 from the vehicle.
  4. Turn ignition switch to OFF position.
  5. Transfer the data from the terminal to the Tech 2 using the following procedure:
    • Connect the Tech 2 to the terminal. See Fig 2.
      • NOTE: The Techline Information System (TIS) supports service programming with the Tech 2 scan tool only.
    • Launch the TIS application at the terminal.
    • Select the SERVICE PROGRAMMING SYSTEM at the main screen.
    • Highlight the following information on the SELECT DIAGNOSTIC TOOL and PROGRAMMING PROCESS SCREEN:
      1. Select Diagnostic Tool  - Select Tech 2.
      2. Select Programming Process  - Identify whether an existing module is being reprogrammed or a module is being replaced with a new one.
      3. Select ECU Location  - Select vehicle.
    • Select NEXT.
    • Verify the connections and select NEXT.
      • NOTE: You may receive a message stating that the PCM could be a service PCM if you selected NO to the VIN being correct. Click OK.
    • Verify the VIN and select Next.
    • Select the appropriate controller for the vehicle being serviced.
      • NOTE: When selecting the Vehicle Configuration Index (VCI) programming type, a valid VCI number for the vehicle must be entered. This number may be obtained from the Techline Customer Support.
    • Select the type of programming to be performed from the following categories:
      1. Normal  - Used for updating an existing calibration or programming a new controller.
      2. Vehicle Configuration Index (VCI)  - Used for updating an existing controller or programming a new controller for newer vehicles whose VINs are not yet in the database.
      3. Reconfigure  - Used to reconfigure a vehicle for changes in tire size and axle ratios.
    • Select NEXT.
      • NOTE: Refer to Service bulletins before service programming is performed if the bulletins are listed along with the calibration files.
    • Select the appropriate calibration file for the vehicle being serviced.
    • Select NEXT.
      • NOTE: Select CANCEL if you receive a message stating that the calibration selected is already the current calibration in the PCM and reprogramming with the same download is not allowed.
    • Verify your selection on the Summary screen.
    • Select NEXT.
  6. Perform the CRANKSHAFT POSITION VARIATION RELEARN PROCEDURE using the SPECIAL FUNCTIONS feature, if applicable. See CRANKSHAFT POSITION SENSOR SYSTEM VARIATION LEARN PROCEDURE .
  7. Close the application and return to the TIS application Selection screen after the download is complete.
  8. Turn OFF the Tech 2.
  9. Disconnect the Tech 2 from the terminal.
  10. Transfer the data from the Tech 2 to the PCM using the following procedure:
    • Turn OFF the ignition.
    • Turn OFF the Tech 2.
    • Disconnect the Tech 2 from the vehicle.
Fig 1: Connecting Scan Tool To DLC
G00196121Courtesy of GENERAL MOTORS CORP.
Fig 2: Connecting Scan Tool To Terminal For Data Transfer
G00196122Courtesy of GENERAL MOTORS CORP.
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