With enhanced GM PID files, Torque Pro can act as a modern Mode 22 scanner. ScanMaster ELM: A robust diagnostic program.
: The software is compatible with Windows, OSX, and older mobile operating systems such as PalmOS and Pocket PC.
Read raw frequency signals to ensure clean air-metering data. Hardware Compatibility and Setup
Originally designed as a lightweight Windows executable (.exe) application, it can also run on Android devices via terminal emulators or custom dashboard applications like Torque Pro using imported PID lists. Step-by-Step Usage Guide Step 1: Interface Connection
Vehicle Diagnostic Scan Tool By BLUETOOTH... From 1,79 - DHgate
During the early generation of affordable ELM327 interface chips, free software options were scarce. Most bundled software could only read generic Mode 01 emissions parameters. OBD II Generic PID Diagnosis - MOTOR Information Systems
You're looking for information on the "GM Mode 22 Scan Tool" by Terry.
Thanks to Terry and countless GM master techs who shared Mode 22 PID lists on forums like Gearhead-EFI, LS1Tech, and the now-defunct GM TechTrain listserv. The data is old, but the protocol is still gold.
While it will read standard "Check Engine" codes (Mode 9), it also accesses manufacturer-specific codes that generic tools miss. This includes transmission codes (on vehicles with electronic automatics like the 4L60/4L80E) and body control module codes.
Communicates directly with GM ECMs/PCMs to retrieve enhanced parameters.