With the ACDelco E78 ECU in OBDII Mode, Bench Mode, and Recovery.

1. OBDII Mode (on-vehicle operation):

Read Identification
Read Errors
Reset Errors
Read Flash
Write Calibration Area (with checksum recalculation, except for TorqSecurity)
Write Second Processor Calibrations

2. Bench Mode (on-bench operation):
Read Flash
Write Flash (without checksum recalculation)
Read EEPROM
Write EEPROM

3. Recovery Mode (on-bench recovery mode):
Read Flash
Write Flash (without checksum recalculation)
Read EEPROM
Write EEPROM

4. EEPROM Editor
Change Odometer Readings
Make New for Linking
Immo Data Calculator for Transferring Immobilizer Synchronization to the BCM

Not all software versions may be supported.