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

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

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

Frequent short trips prevent the engine from reaching the heat needed for automatic cleaning.

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

The 6.6L Duramax is highly rated for reliability, but maintenance is key to avoiding "Limp Mode."

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