If your DIC displays a message like "Exhaust Cleaning Available" or "Exhaust Filter Full":

NEVER perform a manual regeneration inside a garage or enclosed shop due to carbon monoxide and fire risks.

Use the steering wheel buttons to scroll through the DIC Settings Menu . Select "Exhaust Cleaning": Follow the prompts to "Start."

Happens while driving at speeds above 30 mph for about 20-30 minutes. No driver action is needed.

What is the exact message on your dashboard?

Always keep your Diesel Exhaust Fluid (DEF) topped up to prevent speed de-rating.

The "6.6 / 10" in your query likely refers to a specific step or status in the diesel particulate filter (DPF) cleaning cycle or a rating of the engine's performance. 🛠️ 6.6L Duramax Exhaust Cleaning Guide