GM Committed To 2010 Light-Duty Diesel Even If Buyer's Aren't
GM is the last truck maker to remain committed to offering a light-duty diesel engine by 2010, even though GM's vice chairman of global product development Bob Lutz says half-ton buyers are unlikely to opt for the oil burner in the current environment.
"The whole light-duty diesel thing is fraught with problems," Lutz told PickupTrucks.com at the 2009 Detroit auto show. "To meet Tier 2 Bin 5 (50-state federal emissions regulations), the engines are getting more and more expensive. We've already hit the pain threshold with the regular (6.6-liter) Duramax diesel where the customer is saying wait a minute, an $11,000 premium for a diesel engine. I'll buy the gas."
Lutz wouldn't say if the 2010 calendar year still remained a viable date to introduce GM's new 4.5-liter Duramax V-8. However, GM powertrain spokeswoman Susan Garavaglia told PickupTrucks.com that GM is still planning to roll out the engine in its Chevrolet Silverado and GMC Sierra half-ton pickups next year.
GM says the clean diesel is expected to be rated in excess of 310 horsepower and 520 pounds-feet of torque. Fuel efficiency is said to be improved by 25 percent, CO2 emissions cut by 13 percent, and particulate and NOx emissions cut by at least 90 percent.
But even with improved fuel economy, Lutz said, "you save 25 percent fuel use but you'll pay 25 percent more per gallon. And you pay a premium upfront for the engines. Where's the advantage?"
Other vehicle manufacturers have shelved or killed plans for light-duty diesels in cars and trucks. Chrysler has said its Cummins-source Ram won't be available until 2011 at the earliest. Ford and Toyota have both shelved their diesels indefinitely.
"Everybody's coming to the same conclusion. Explain how this makes sense to the customer," Lutz said.

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