Economy EPA Fuel Economy Sierra 
Green Car Congress
APRIL 1, 2013
V-8 EcoTec3 AFM VVT DI (L83) for Chevrolet Silverado and GMC Sierra. The 2014 GMC Sierra 1500 full-size pickup truck features a new 5.3L EcoTec3 V-8 engine ( earlier post ) equipped with direct injection, cylinder deactivation (AFM) and variable valve timing to achieve EPA estimates of 16 mpg city (14.7 Fuel economy.
The Truth About Cars
JUNE 8, 2023
I don’t know that I personally have a need for something as large as the current batch of full-size half-ton trucks like this 2023 GMC Sierra AT4X. The AT4 had been the top-trim choice for Sierra buyers who preferred a butch style rather than the bling of a Denali, but now X gon’ give it to ya with even more off-road capability.
Green Car Congress
NOVEMBER 9, 2013
The 2014 Chevrolet Silverado 1500 and GMC Sierra 1500 have strategically replaced traditional steel with lightweight, high-strength steels for improved capability, safety and fuel efficiency. Similarly, making the most of mass also enables Silverados and Sierras equipped with the 4.3L Click to enlarge.
Clean Fleet Report
MARCH 30, 2021
The 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro showed-up in my driveway and the neighbors took notice. Power and Torque and Fuel Sipping. recently drove the 2021 GMC Sierra 1500 4WD Crew Cab AT4, powered by a 3.0-liter Fuel economy for the 3.0-liter Smooth, Powerful Diesel Performance.
Green Car Congress
APRIL 2, 2018
The US Environmental Protection Agency (EPA) Administrator Scott Pruitt announced the completion of the Midterm Evaluation (MTE) process for the greenhouse gas (GHG) emissions standards for cars and light trucks for model years 2022-2025, and his final determination that the current standards are not appropriate and should be revised.
Baua Electric
APRIL 9, 2024
The US Department of Energy (DOE) has revised its procedures for calculating the petroleum-equivalent fuel economy of EVs. The Petroleum Equivalency Factor (PEF) is used by the EPA to assess automakers’ compliance with the DOT’s Corporate Average Fuel Economy (CAFE) standards.
Green Car Congress
MAY 6, 2013
When the all-new 2014 GMC Sierra full-size pickup arrives this summer, its standard 4.3L Sierras equipped with the 4.3L Sierras equipped with the 4.3L Sierra’s standard V-6 produces an SAE-certified 285 horsepower (212 kW) and is matched with a proven, efficient six-speed automatic transmission. Click to enlarge.
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