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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003AVALANCHE 1500 2WD V8-5.3L VIN TREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRPROGRAMMINGPROGRAMMING (OFF-BOARD)REMOTE PROGRAMMING
2003 Chevrolet Avalanche 1500 2WD V8-5.3L VIN T
Remote Programming
2003 Chevrolet Avalanche 1500 2WD V8-5.3L VIN TSECTION Remote Programming
Service Programming System (SPS) Off Board Remote Procedure
Tools Required: J 41207-C Off-Board Programming Adapter Kit
The J 41207-C is required when a module must be programmed without having the vehicle present. The adapter allows the module to be turned ON and communicate with the scan tool.
For additional SPS information, refer to Service Programming System (SPS) Description.
Important: Ensure the Tech 2 and the terminal are both equipped with the latest software before performing SPS.
Performing the Off Board Remote Procedure
1. Obtain the vehicle identification number (VIN) of the vehicle for which the module is being programmed.
Important: The TIS supports service programming with the Tech 2 scan tool only.
2. Launch the TIS application at the terminal.
3. Select the Service Programming System.
4. Highlight the following information on the Select Diagnostic Tool and Programming Process screen:
* Select Diagnostic Tool-Select Tech 2
* Select Programming Process-Identify whether an existing module is being reprogrammed or replaced with a new one.
* Select ECU location-select Off-Board Programming Adapter.
5. Select Next.
Important: Ensure the correct connector for the control module is used.
6. Follow the directions on the Preparing for Communication screen for connecting the following components:
* The control module
* The Off-Board Programming Adapter (OBPA)--Refer to the TIS Users Guide for a listing of the OBPA.
* The Tech 2
7. Select the Service Programming Request Information function on the Tech 2.
8. Follow the Tech 2 instructions to obtain the module data and security information.
9. After the Tech 2 has received the data from the module, exit the Request Info mode.
10. Disconnect the Tech 2 from the OBPA.
11. Turn OFF the Tech 2.
12. Connect the Tech 2 to the terminal.
13. Turn ON the Tech 2.
14. Select Next at the terminal after the Tech 2 start-up screen appears.
15. Enter the VIN of the vehicle that will be receiving the control module.
16. Select Next.
Important: 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 Techline Customer Support.
17. Select the type of programming to be performed from the following categories:
* Normal--Used for updating an existing calibration or programming a new controller.
* 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.
* Reconfigure--Used to reconfigure a vehicle for changes in tire size and axle ratios.
18. Select Next.
19. Select a calibration on the Calibration Selection screen, if necessary.
20. Ensure all the desired folder tabs have a green check mark.
21. Select Next.
22. Verify the current and the selected calibration of the control module on the Summary screen.
23. Select Next.
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 download is not allowed.
24. Select OK.
25. On model year 1996 and newer controllers, a crankshaft position (CKP) relearn procedure box may appear. Select OK.
26. Follow the on-screen instructions, if any, when the Program Controller/Programming Complete screen appears.
27. Select Close.
28. Turn OFF the Tech 2.
29. Disconnect the Tech 2 from the terminal.
30. Connect the Tech 2 to the OBPA.
31. Turn ON the Tech 2.
32. Select Enter at the title screen.
33. Select the Service Programming System at the Main Menu.
34. Select the Program ECU function.
35. Select Continue.
36. Follow the on-screen instructions.
37. Select Continue.
38. Select Exit when the programming is complete.
39. Turn OFF the OBPA.
40. Turn OFF the Tech 2.
Important: Wait 30 seconds after the OBPA is turned OFF before disconnecting the control module.
41. Disconnect the OBPA from the Tech 2 and the control module.
Tools Required: J 41207-C Off-Board Programming Adapter Kit
The J 41207-C is required when a module must be programmed without having the vehicle present. The adapter allows the module to be turned ON and communicate with the scan tool.
For additional SPS information, refer to Service Programming System (SPS) Description.
Important: Ensure the Tech 2 and the terminal are both equipped with the latest software before performing SPS.
Performing the Off Board Remote Procedure
1. Obtain the vehicle identification number (VIN) of the vehicle for which the module is being programmed.
Important: The TIS supports service programming with the Tech 2 scan tool only.
2. Launch the TIS application at the terminal.
3. Select the Service Programming System.
4. Highlight the following information on the Select Diagnostic Tool and Programming Process screen:
* Select Diagnostic Tool-Select Tech 2
* Select Programming Process-Identify whether an existing module is being reprogrammed or replaced with a new one.
* Select ECU location-select Off-Board Programming Adapter.
5. Select Next.
Important: Ensure the correct connector for the control module is used.
6. Follow the directions on the Preparing for Communication screen for connecting the following components:
* The control module
* The Off-Board Programming Adapter (OBPA)--Refer to the TIS Users Guide for a listing of the OBPA.
* The Tech 2
7. Select the Service Programming Request Information function on the Tech 2.
8. Follow the Tech 2 instructions to obtain the module data and security information.
9. After the Tech 2 has received the data from the module, exit the Request Info mode.
10. Disconnect the Tech 2 from the OBPA.
11. Turn OFF the Tech 2.
12. Connect the Tech 2 to the terminal.
13. Turn ON the Tech 2.
14. Select Next at the terminal after the Tech 2 start-up screen appears.
15. Enter the VIN of the vehicle that will be receiving the control module.
16. Select Next.
Important: 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 Techline Customer Support.
17. Select the type of programming to be performed from the following categories:
* Normal--Used for updating an existing calibration or programming a new controller.
* 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.
* Reconfigure--Used to reconfigure a vehicle for changes in tire size and axle ratios.
18. Select Next.
19. Select a calibration on the Calibration Selection screen, if necessary.
20. Ensure all the desired folder tabs have a green check mark.
21. Select Next.
22. Verify the current and the selected calibration of the control module on the Summary screen.
23. Select Next.
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 download is not allowed.
24. Select OK.
25. On model year 1996 and newer controllers, a crankshaft position (CKP) relearn procedure box may appear. Select OK.
26. Follow the on-screen instructions, if any, when the Program Controller/Programming Complete screen appears.
27. Select Close.
28. Turn OFF the Tech 2.
29. Disconnect the Tech 2 from the terminal.
30. Connect the Tech 2 to the OBPA.
31. Turn ON the Tech 2.
32. Select Enter at the title screen.
33. Select the Service Programming System at the Main Menu.
34. Select the Program ECU function.
35. Select Continue.
36. Follow the on-screen instructions.
37. Select Continue.
38. Select Exit when the programming is complete.
39. Turn OFF the OBPA.
40. Turn OFF the Tech 2.
Important: Wait 30 seconds after the OBPA is turned OFF before disconnecting the control module.
41. Disconnect the OBPA from the Tech 2 and the control module.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.