Brake, ABS, and Traction Control Lights on my Cummins

Modified on Wed, 7 Sep, 2022 at 3:10 PM

Speedometer not working, Brake, ABS, and Traction Control Lights On

Any, or all of these symptoms will appear on the 2013+ 6.7L Cummins when the tire size is set with the engine running. 

To correct the issue follow the steps below: 

-Turn the key on, but leave the engine off.

-Access the main menu on your GT device.

-Scroll down to "Diagnostics" and select clear DTC's.

-After you are back to the Main Menu, select the special functions option and navigate to "Tire size"

-Set your tire size to the correct size and follow the prompts

-Once complete, press "Go Back" until you see the main menu