2024 Duramax Specs. Current truck is a 2014 duramax with the 6 speed. 2 of mine run delo 5w40 year round and the newest one i'm trying the ultra low ash delo 600 adf 15w40.

Userfriendly is right, diff levels are supposed to be 0.4 inches (10mm) below the fill plug with a level truck and oil hot enough that it will fall back down into the. Find incentives, rebates, recalls, and warranty.