It ain't a truck, but it's interesting nonetheless that GM announced yesterday that they will add a diesel variant to the Cruze lineup in North America in calendar year 2013.
Diesel versions of the Cruze are currently being sold in Europe. The Cruze Eco with a standard six-speed manual transmission is the most fuel-efficient gas-powered/non-hybrid vehicle in America with an EPA-rated 42 mpg on the highway.
GM says that additional details on the Cruze diesel for North American markets will be released at a later date.