GM has quietly brought back a feature that a lot of truck owners asked for — the Trailer Light Test  inside the myChevrolet  and myGMC  mobile apps. If you tow regularly, this is one of those small updates that actually makes life easier. What Is the Trailer Light Test? The Trailer Light Test allows you to cycle your trailer lights directly from your phone , so you can stand behind the trailer and confirm everything is working — without climbing in and out of the cab. The tes

When news broke that OXE Marine and GM Marine  had signed a development agreement to use Duramax engines  in a new generation of diesel outboards, most people saw it as a marine story. For 3.0 Duramax owners, it is something else entirely: It’s a strong signal that GM sees the LZ0 3.0L Duramax inline-six  as a long-term platform, not a short-lived experiment. In this article, we’ll break down what the agreement actually says, why it matters for truck and SUV owners, and how a