Gretio™ is a modern scan tool for enthusiasts and professionals alike. It features an advanced dashboard system for viewing various sensor data. It can also perform advanced diagnostics on all of the primary modules you will find in a GM vehicle.
You can download Gretio for free on your mobile device’s app store!
Supported OBD2 Devices
* Only MX and MX+ models support GM SWCAN.
Surreal Development has published a document helping people diagnose emissions issue in select General Motors diesel vehicles