Diesels Come to Colorado & Canyon (This Fall)

That the Chevrolet Colorado and GMC Canyon midsize trucks—which have helped increase truck sales as they proven a supplement, not a detriment, to Siliverado and Sierra sales—were going to have a diesel was known from the get-go.

That the Chevrolet Colorado and GMC Canyon midsize trucks—which have helped increase truck sales as they proven a supplement, not a detriment, to Siliverado and Sierra sales—were going to have a diesel was known from the get-go.

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And now details have been revealed about the 2.8-liter Duramax four-cylinder turbo-diesel that will become available this fall in a range of vehicle configurations (Colorado: LT and Z71 Crew Cab models, with 2WD or 4WD; Canyon: SLE and SLT Crew Cab models, with 2WD or 4WD). It is priced $3,730 more than a comparably equipped 3.6-liter gasoline-powered V6 model.

The engine is SAE-certified at 181 hp (135 kW) @ 3,400 rpm and 369 lb-ft of torque (500 Nm) @ 2,000 rpm. (They’re still getting the fuel economy numbers validated; they should be good, to say the least.)

It features an iron block and an aluminum DOHC cylinder head. There are forged steel connecting rods and crankshaft. There is a variable-geometry turbocharger. The oiling circuit has a dedicated feed for the turbocharger so that there are increased pressure at the turbo and faster oil delivery.

According to General Motors, the Duramax 2.8-liter engine is the “cleanest diesel truck engine” the corporation has ever produced.

One contributing factor to the comparative cleanliness is a cooled exhaust gas exhaust gas recirculation system (EGR).

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Across town from GM, over at Ram, the Ram 1500 EcoDiesel—which is a full-size truck, not midsize, and which is powered by a 3.0-liter diesel that produces 240-hp and 420 lb-ft of torque and provides a remarkable 28 mpg—is proving to be a remarkable success for the truck brand, as they’re working toward the diesel accounting for as much as 20% of the sales volume of the Ram 1500, which is showing steady sales increases month after month.

GM is probably hoping that it will do at least as well with the Duramax.