6.6 / 10 Acciгіnmist... < iPhone >

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

Move to an outdoor area away from flammable materials (grass, paper, fuel). Exhaust temperatures will be extremely high. 6.6 / 10 AcciГіnMist...

Always keep your Diesel Exhaust Fluid (DEF) topped up to prevent speed de-rating. 6.6 / 10 AcciГіnMist...

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