Community projectGM Global A-focusedStable comma 3 path
A specialist option for certain GM vehicles.
OPGM is community driving software focused on certain GM vehicles. Its specific car, hardware and software requirements are central to choosing it.
Start here
comma 3 · For everyday use
opgm/releaseEnter this under Settings → Software → Custom Software on the comma device. Do not open it in a browser.Installer values are entered on the comma device. Device coverage does not establish compatibility with a specific car.
Open the project's official pages before you change software.
What you can change
Driving profiles such as Relaxed, Standard or Aggressive change following and speed-control behavior. Some versions offer direct distance controls instead. Names and options vary.
Testing: comma 3
Switch manually between standard speed control and Experimental or end-to-end planning. Exact modes and car requirements depend on the fork and version.
Testing: comma 3
Check the project’s exact requirements first. Treat installation status separately from whether a source version exists.
comma is the hardware. OPGM is software that runs on it. Start by checking the device you already have.
See the listed devices and installersYour model, year, equipment and hardware decide the fit. A software feature or matching car brand alone does not establish compatibility.
Check your car firstUse the installation guide for your exact device. It explains the available path and what to check before changing software while parked.
Open the installation guidecomma 3 · For developers
opgm/nightlyConfirmed development
Checked Aug 19, 2026
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