General Motors will invest $100 million in its Tonawanda, New York State engine plant to produce an all-new, 4.5-litre V-8 Duramax diesel engine for the Chevrolet Silverado and GMC Sierra light-duty pickup trucks and the HUMMER H2. By comparison with the existing Duramax unit the engine will improve engine fuel efficiency by 25%, reduce CO2 [...]

More..