Green Car Congress
JULY 18, 2014
Chevrolet and GMC have confirmed a new eight-speed automatic transmission will be standard on 2015 Chevrolet Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali models equipped with the 6.2L As with other EcoTec3 engines, it seamlessly switches to four-cylinder operation under lighter loads to improve fuel economy.
Green Car Congress
AUGUST 8, 2012
The EPA certifications allow Icom to convert these popular fleet vehicles in the US market for propane/autogas bi-fuel use. The GMC-brand vehicles include Sierra, Yukon and Savana vans. The JTG liquid-propane injection application is a fully-integrated, mono-fuel or bi-fuel engine system.
Green Car Congress
APRIL 25, 2016
In a paper presented at the 2016 SAE World Congress, Tula Technology, developer of Dynamic Skip Fire (DSF) cylinder deactivation technology, reported significant fuel economy gains of up to 18% over a conventional GM 6.2-liter Meaning, DSF reduces fuel consumption by 14-18% over V8. liter V8 by operating using Dynamic Skip Fire.
Green Car Congress
SEPTEMBER 24, 2012
General Motors Research & Development developed an aluminum-to-aluminum welding technology expected to enable more use of the lightweight metal on future vehicles, which can help improve fuel economy and driving performance. GM plans to use this technology more extensively starting in 2013.
Green Car Congress
APRIL 5, 2009
The five-passenger crossover SUV, which shares the Theta chassis with the Chevrolet Equinox, offers estimated highway fuel economy of 30 mpg (7.8 City fuel economy is estimated to be 21 mpg US (11.2 Maximum fuel economy is achieved in part with an “ECO” mode activated via a console-mounted button.
Green Car Congress
JANUARY 28, 2010
Car buyers shouldn’t be forced to buy high-end bells and whistles when fuel economy and reducing emissions are their top priority. But muscle hybrids, such as the GMC Yukon Hybrid and Lexus LS 600h L, which emphasize power over increased mileage and reduced emissions, have much lower hybrid value, according to the group.
Green Car Congress
DECEMBER 16, 2020
The result is that the engine dynamically fires the optimal number of cylinders to maximize fuel economy while maintaining a smooth ride with commercial levels of noise and vibration. Because each combustion event is selected to allow optimal efficiency, DSF reduces fuel and CO 2 , and for diesel applications, NO x emissions.
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