6.6 / 10 Acciгіnmist... Official
The 6.6L Duramax is highly rated for reliability, but maintenance is key to avoiding "Limp Mode."
Happens while driving at speeds above 30 mph for about 20-30 minutes. No driver action is needed.
What is the of your truck (e.g., 2024 Silverado 2500)? Are you currently experiencing a power loss (Limp Mode) ?
Always keep your Diesel Exhaust Fluid (DEF) topped up to prevent speed de-rating.
Frequent short trips prevent the engine from reaching the heat needed for automatic cleaning.
If your DIC displays a message like "Exhaust Cleaning Available" or "Exhaust Filter Full":
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
Use the steering wheel buttons to scroll through the DIC Settings Menu . Select "Exhaust Cleaning": Follow the prompts to "Start."