Is a def delete 2015 duramax actually worth it?

If you're looking into a def delete 2015 duramax, you probably already know the headache that comes with the LML's emissions system. It's one of those things where the truck runs great until a tiny sensor decides to throw a fit, and suddenly your $50,000 workhorse is crawling down the highway at 5 mph because it entered "limp mode." It's frustrating, expensive, and honestly, a bit of a buzzkill for anyone who actually uses their truck for hauling or long trips. ...

February 18, 2026 · 6 min · William Ingvild