Gm Tech 1 Emulator Link

If you own a 1990-2006 GM vehicle, a standard OBD-II scanner will only give you generic P-codes (P0300 misfire, etc.). You cannot see:

The (and its successor, the Tech 1A) was the definitive factory diagnostic tool for General Motors vehicles from the early 1980s through the mid-1990s. For owners of classic Corvettes, Camaros, and other GM "Youngtimers," it remains a holy grail for deep-system troubleshooting. gm tech 1 emulator

Original Tech 1 units relied on for different vehicle systems (e.g., ABS, Powertrain, Airbags). If you own a 1990-2006 GM vehicle, a