- May 15, 2026
- By Tess
- In Diagnostics, Diesel, Duramax
- 6
- 0

Since its debut in 2017, the L5P Duramax has proven to be a powerhouse, offering incredible towing capacity and a much-improved fuel system over the previous LML generation. However, it has one major “Achilles heel”: its highly sensitive sensor network. There is nothing more frustrating than hauling a trailer down I-20 and having your truck