GM/Opel SeedKey 5-Byte ECU Calculator
SeedKey 5 Byte by S1mple is a lightweight Windows calculator for supported GM / Opel ECU Seed-Key service workflows.
Simply select the correct ECU type, enter the 5-byte Seed Code and calculate the corresponding Key Code.
The utility provides a quick alternative to manually calculating supported Seed-Key values and keeps the workflow in a simple single-window interface.
Supported ECU Types
Current supported types include:
Select the exact ECU type before calculating the key, as the required Seed-Key calculation depends on the selected controller family.
Key Features
How It Works
No manual calculation is required for the supported ECU algorithms.
Windows Compatibility
The application is compatible with:
License Information
The About window displays the current:
Important
SeedKey 5 Byte by S1mple is a lightweight Windows calculator for supported GM / Opel ECU Seed-Key service workflows.
Simply select the correct ECU type, enter the 5-byte Seed Code and calculate the corresponding Key Code.
The utility provides a quick alternative to manually calculating supported Seed-Key values and keeps the workflow in a simple single-window interface.
Supported ECU Types
Current supported types include:
Code:
E84
E39 / E39A
E78
E80
E82
E90
E92
E98Select the exact ECU type before calculating the key, as the required Seed-Key calculation depends on the selected controller family.
Key Features
- GM / Opel 5-byte Seed-Key calculation
- Simple ECU type selection
- 5-byte Seed Code input
- Automatic Key Code calculation
- Support for E39 / E39A, E78, E80, E82, E84, E90, E92 and E98
- Compact Windows interface
- Built-in license information display
How It Works
- Select the correct supported ECU type
- Enter the required 5-byte Seed Code
- Select Calculate
- Use the generated Key Code for the intended authorized service procedure
No manual calculation is required for the supported ECU algorithms.
Windows Compatibility
The application is compatible with:
- Windows 7
- Windows 10
- Windows 11
License Information
The About window displays the current:
- Licensed user
- License status
- Expiration date
- Remaining license time
Important
