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GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6

Green Car Congress

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.

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2023 GMC Sierra AT4X Review: Understated

The Truth About Cars

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.

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2014 Silverado and Sierra pickups leverage high- and ultra-high strength steels for weight reduction

Green Car Congress

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 These materials reduce mass and increase strength.

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Road Test: 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro

Clean Fleet Report

The 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro showed-up in my driveway and the neighbors took notice. recently drove the 2021 GMC Sierra 1500 4WD Crew Cab AT4, powered by a 3.0-liter This means that when you are towing up a grade, it will pull strong and still deliver good fuel economy. Fuel economy for the 3.0-liter

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New GM 4.3L EcoTec V-6 for Sierra delivers 305 lb-ft torque

Green Car Congress

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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EPA: GHG emissions standards for cars and light trucks should be revised; joint process with NHTSA (updated with more reactions)

Green Car Congress

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.

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LPG system provider Icom earns 17 new EPA certifications For GM vehicles

Green Car Congress

Icom North America, a developer and manufacturer of liquid-injection propane (autogas) systems for commercial and consumer vehicles, has received 17 new US Environmental Protection Agency (EPA) certifications for its patented JTG II Propane Liquid Injection bi-fuel systems. The GMC-brand vehicles include Sierra, Yukon and Savana vans.

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