DeVille DTS V8-4.6L VIN 9 (2002)
Engine Control Module: Service and Repair
Powertrain Control Module Programming and Setup
Before Programming A Control Module
IMPORTANT: Do NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors
Corporation service bulletin. Programming a control module at any other time will not permanently correct a customers concern. Ensure that the
following conditions are met before programming a control module:
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Vehicle system voltage
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There is no charging system concern. All charging system concerns must be repaired before programming a control module.
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Ensure that the battery voltage is greater than 12 volts but less than 18 volts. If the battery voltage is low, the battery must be charged before
programming the control module.
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Ensure that a battery charger is NOT connected to the vehicles battery. Incorrect system voltage, or voltage fluctuations from a battery charger
may cause programming failure or control module damage.
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Turn OFF or disable any system that may put a load on the vehicles battery.
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The twilight sentinel
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The interior lights
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The daytime running lights (DRL). Applying the parking brake, on most vehicles, disables the DRL system. Refer to the Owners manual.
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The HVAC systems
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The engine cooling fans
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Ensure that the ignition switch is in the proper position. The scan tool prompts you to turn ON the ignition, with the engine OFF. Do NOT
change the position of the ignition switch during the programming procedure, unless instructed to do so.
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Ensure that all tool connections are secure.
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The RS-232
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The connection at the data link connector (DLC)
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The voltage supply circuits
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DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or
control module damage may occur.
Remote Programming
1. Turn OFF the ignition.
2. Install the Tech 2 to the vehicle DLC.
3. Turn ON the ignition, with the engine OFF.
4. Turn OFF all vehicle accessories.
5. With the Tech 2, select Service Programming.
6. With the Tech 2, select Request Info.
7. Identify vehicle information as requested by the Tech 2.
8. Select the type of module you are programming.
9. Select the type of programming to be performed.
10. Verify the displayed VIN with the vehicle VIN. If the displayed VIN does not match the actual VIN, write down the actual VIN and correct the
VIN at the Techline terminal.
11. When complete, Exit Service Programming.
12. Turn OFF the Tech 2 and disconnect the Tech 2 from the vehicle.
13. Turn OFF the ignition.
14. Connect the Tech 2 to the Techline terminal.
15. Select Service Programming.
16. Select Tech 2 as the tool you are using.
17. Select the type of programming to be performed.
18. Verify the displayed VIN with the vehicle VIN. Correct the VIN as necessary.
19. Select the type of module you are programming.
20. Identify what type of programming that you are performing.
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Normal-This type of programming is for updating an existing calibration or programming a new controller.
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Vehicle Configuration Index (VCI)-This selection is used if the vehicle VIN is unavailable or not recognized by the Techline use this option.
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Reconfigure-This is to reconfigure a vehicle, such as tire size and axle ratio changes.
21. Select the appropriate calibration file.
22. Ensure that all connections are secure.
23. Select Reprog in order to initiate the download of the new calibration to the Tech 2.
24. After the download is complete, turn OFF the Tech 2.
25. Disconnect the Tech 2 from the Techline terminal.
26. Install the Tech 2 to the vehicle data link connector (DLC).
27. Turn ON the Tech 2.
28. Turn ON the ignition, with the engine OFF.
29. Select Service Programming.
