Here I would like to show you how to disable F45 option on 97 Corvette step-by-step. The process requires a GM Tech2 scan tool.
Fire up GM Tech 2 scanner and go to service Program System. Then we can start programming new modules. This is the key to disable F45. IR from working on computers, hot plugging serial devices was a no-no. So I unplugged all the connectors on the ECS unit before starting.
Disconnect the Electronic Suspension Control (ESC).
Hook up GM Tech2 to the cars OBD port and go to the menu.
Select F0: Diagnostics from the Main Menu
Select F0: Body Control Module from Body
Turn off the ignition.
Switch on the ignition and verify that the dreaded – MAX SPEED 80 MPH.
The PRO F45 option is gone.