General Motors Tech2 User Guide
121
cannot be programmed. You would select Pass-Thru to perform SPS without
disconnection from the vehicle or the computer.)
• Under “Select Programming Process,” select Reprogram ECU or Replace and
Program ECU, depending on whether you are reprogramming an existing
module or replacing a module.
• Under “Select ECU Location,” select Vehicle or Off Board Programming
Adapter (OBPA), depending on whether you are performing on-vehicle or off-
board programming.
2.5 After making selections, select Next.
2.6 Confirm connections and select Next on the Preparing for Communication screen.
IMPORTANT: If you answered NO to the VIN in step 1.7, a box may appear stating
“The ECU could be a service ECU.” Click OK.
2.7 A Validate VIN screen will appear. After confirming and/or entering the correct VIN,
select Next.
2.8 A Supported Controllers screen will appear asking you to identify the type of
controller being programmed. Some vehicles may have more than one
programmable controller — examples include PCM, BCM, IPC. Select the
appropriate controller for the vehicle being serviced.
After selecting the controller to be programmed, identify the type of programming to
be performed:
• Normal is used for updating an existing calibration or programming a new
controller.
• For newer vehicles that do not have VINs in the database, VCI (Vehicle
Configuration Index) is used for updating an existing controller or programming
a new controller. For these vehicles, you will need to contact ACDelco
Aftermarket Support at 1-888-212-8959 for assistance.
• Reconfigure is used to reconfigure a vehicle, such as a truck, for changes in tire
size & axle ratios.
2.9 After making selections, select Next.
IMPORTANT: If bulletins are listed together with the calibration files, refer to these
service bulletins before performing service programming
IMPORTANT: Select Cancel if you receive a message stating that the calibration
selected is already the current calibration in the control module, and
reprogramming with the same software calibrations is not allowed.
2.10 A Calibration Selection screen will appear showing the calibration file history for the
vehicle or controller being serviced. The screen displays a description for each
calibration file. Select the appropriate file based on these descriptions.
Then select Next.
2.11 After making the necessary selections, a Summary screen will appear allowing you
to confirm your selection. Select Next to continue.
To Next Page
Loading...