I was checking over the DP blogs, and rolled over one of those "Vibrant" text link ads. Usually, I just ignore them, if not outright activate AdBlock. But this one caught my eye. I knew about the 6.6 liter Duramax, and even the development of the 4.5 liter "baby" Duramax.

But I wasn't aware of the mysterious 6.2 liter Duramax. However, I do know about the L9H 6.2 liter Vortec engine in the Denali 1500. So either GM let a secret slip, or more likely, its digital agency let a typo slip past their copy editors.