GM GlobalA



Data Sources
This network features two broad types of commands: call and response, and module-to-module. Call and response commands are triggered by events, such as button presses. Module-to-module commands are the traffic between networked devices, and typically relay sensor data.

Mode $22 PIDs
General Motors has enhanced PIDs for their vehicles. A list of "enhanced" PIDs will appear below.

Actuators
Some devices may be controlled by diagnostic tools or test equipment. These are usually operated by "services," and some require a seed/key to unlock. Examples appear below.

Links
CANBusHack Services List

Foxdie's mBed GMLan-Sniffer Repo

Foxdie's GMLan Libraries

CarModders' GMLan "Bible"

Latest activity
