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GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 29534
Experience:  GM Grand Master Technician 2007. 14 years experience.
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averag life expectancy of a duramax?

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What is the averag life expectancy of a duramax? What type of problems would be expected at 261000 miles? How could you maximize totalfuel economy? Whats would the pros and cons be of a desiel vs gasoline engines be?

Greetings and Welcome to Just answer.

It is not uncommon for a Duramax to go 400000 miles plus with proper maintenance. I +have seen several that were used for RV hauling with 500000 + and going strong. Adding a chip or driving it hard will not lead to a long life.


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