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 emissions by 13% and cut particulates and NOx emissions by at least 90% for GM’s North American market light duty trucks and the HUMMER H2 built after 2009. This will be GM’s first engine to use a selective catalytic reduction NOx aftertreatment system with a [...]
