Communicates via the 12-pin or 16-pin ALDL connector under the dash.
A "GM Tech 1 emulator" typically refers to software that mimics the operating environment of the original handheld Tech 1 or Tech 1A unit. Because the Tech 1 was built for systems (roughly 1981–1995), a true software-only emulator for PC is rare compared to its successor, the Tech2Win software, which emulates the Tech 2 scan tool. gm tech 1 emulator
Connects to proprietary modules including the Body Control Module (BCM/CCM), Supplemental Inflatable Restraint (SIR), and ABS systems. Communicates via the 12-pin or 16-pin ALDL connector