This module enables chip tuning of Chevrolet, Cadillac, Hummer, and GMC vehicles with 3.6L, 3.7L, 4.2L, and 4.6L engines equipped with the ACDelco E67 ECU.

Working with firmware that does not contain the ECU code is not supported. These limitations are due to the inability to calculate all checksums without the ECU in the firmware.
Supported software versions:

• 12611134
• 12618164
• 12618588
• 12618768
• 12620193
• 12626281
• 12630465
• 12631999

Over 120 of the most important system calibrations are available for modification.
The module calculates checksums when saving the firmware.