Gm Tech 1 Emulator [updated] -

🔧 A software/hardware solution that mimics the legendary GM Tech 1 scan tool (the brick with the tiny green screen). It runs on a laptop or even a Raspberry Pi, but talks to your OBD1 GM vehicle like it’s 1991.

: The original tool used interchangeable cartridges (e.g., GM 81–92 ECM) to interface with different systems. Later, a Mass Storage Cartridge (MSC) was released to store multiple applications on one module. Modern Emulation & Alternatives gm tech 1 emulator