In a recent Wall Street Journal report (via PickupTrucks.com), GM North America President Mark Reuss hinted at a diesel engine on the way for the company’s upcoming next-generation light duty pickup trucks. As much as we all would like to presume what Reuss is talking about is some sort of successor to the famously stillborn 4.5L Duramax that would have gone into the Chevrolet Silverado and GMC Sierra 1500 trucks, he could have just as easily meant the upcoming next-gen, U.S.-spec Chevrolet Colorado and GMC Canyon trucks. The current global-spec Colorado does have a pair of diesel engines powering it, after all.
Unless we’re in for a really big surprise, chances are that’s where the mystery diesel engine will end up. GM has already invested in the development and application of a diesel engine in a mid-sized light duty truck, and it seems to make sense for them to increase their economies of scale.