6.6 / 10 Acciгіnmist... -

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

Frequent short trips prevent the engine from reaching the heat needed for automatic cleaning. 6.6 / 10 AcciГіnMist...

The engine RPM will increase significantly. This can take 30 to 50 minutes . Do not turn off the engine until the message says cleaning is complete. 🛡️ Best Practices for Longevity 6.6 / 10 AcciГіnMist...

Happens while driving at speeds above 30 mph for about 20-30 minutes. No driver action is needed. 6.6 / 10 AcciГіnMist...

Move to an outdoor area away from flammable materials (grass, paper, fuel). Exhaust temperatures will be extremely high.

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