Safety Warning
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 MANUALSCHEVROLET2002MONTE CARLO V6-3.4L VIN EREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRPOWERTRAIN CONTROL MODULE PROGRAMMING AND SETUPOFF-BOARD PROGRAMMING
2002 Chevrolet Monte Carlo V6-3.4L VIN E
Off-Board Programming
2002 Chevrolet Monte Carlo V6-3.4L VIN ESECTION Off-Board Programming
1. Obtain the VIN of the vehicle for which the control module is being programmed.
2. With the Techline terminal, select Service Programming.
3. Select Tech 2, Reprogram ECU, and Off-Board Programming Adapter as the ECU location.
4. Connect the control module, off-board programming adapter, and the Tech 2 as described on the Techline terminal. Ensure you use the correct harness connector from the off-board programming adapter kit.
5. With the Tech 2, select Service Programming Request Information function. The Tech 2 communicates with the control module and receives the access code.
6. With the Tech 2, exit the Service Programming Request Information.
7. Disconnect the Tech 2 from the Off-Board Programming Adapter.
8. Connect the Tech 2 to the Techline terminal.
9. Turn ON the Tech 2.
10. With the Techline terminal, enter the VIN of the vehicle that will be receiving the control module.
11. The Techline terminal will display the message, attaching to database.
12. Identify what type of programming that you are performing.
13. Select the appropriate calibration file.
14. Ensure all connections are secure.
15. The Techline terminal displays a summary screen that summarizes your selections. After confirming your choices, the Techline terminal automatically loads the calibration files to the Tech 2.
16. After the download is complete, turn OFF the Tech 2.
17. Disconnect the Tech 2 from the Techline terminal.
18. Connect the Tech 2 to the Off-Board Programming Adapter.
19. With the Tech 2, select Service Programming.
IMPORTANT: DO NOT turn OFF the Off-Board Programming Adapter if the programming procedure is interrupted or unsuccessful. Ensure the control module and the Off-Board Programming Adapter connections are secure and the Techline operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, replace the control module.
20. With the Tech 2, select Program.
21. After the download is complete, exit Service Programming.
22. Turn OFF the off-board programming adapter.
2. With the Techline terminal, select Service Programming.
3. Select Tech 2, Reprogram ECU, and Off-Board Programming Adapter as the ECU location.
4. Connect the control module, off-board programming adapter, and the Tech 2 as described on the Techline terminal. Ensure you use the correct harness connector from the off-board programming adapter kit.
5. With the Tech 2, select Service Programming Request Information function. The Tech 2 communicates with the control module and receives the access code.
6. With the Tech 2, exit the Service Programming Request Information.
7. Disconnect the Tech 2 from the Off-Board Programming Adapter.
8. Connect the Tech 2 to the Techline terminal.
9. Turn ON the Tech 2.
10. With the Techline terminal, enter the VIN of the vehicle that will be receiving the control module.
11. The Techline terminal will display the message, attaching to database.
12. Identify what type of programming that you are performing.
13. Select the appropriate calibration file.
14. Ensure all connections are secure.
15. The Techline terminal displays a summary screen that summarizes your selections. After confirming your choices, the Techline terminal automatically loads the calibration files to the Tech 2.
16. After the download is complete, turn OFF the Tech 2.
17. Disconnect the Tech 2 from the Techline terminal.
18. Connect the Tech 2 to the Off-Board Programming Adapter.
19. With the Tech 2, select Service Programming.
IMPORTANT: DO NOT turn OFF the Off-Board Programming Adapter if the programming procedure is interrupted or unsuccessful. Ensure the control module and the Off-Board Programming Adapter connections are secure and the Techline operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, replace the control module.
20. With the Tech 2, select Program.
21. After the download is complete, exit Service Programming.
22. Turn OFF the off-board programming adapter.
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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.