article thumbnail

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 2014 GMC Sierra.

Sierra 262
article thumbnail

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.

Sierra 257
article thumbnail

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 Weighing in at 5,640 pounds, the Sierra 1500 AT4 has a maximum payload of 1,810 pounds and can tow 8,800 pounds. Brains and brawn.

Sierra 97
article thumbnail

First natural gas GM half-ton pickups with 5.3L DI engines delivered in Texas

Green Car Congress

GMC Sierra and Chevy Silverado trucks for each fleet were upgraded to run on either natural gas or gasoline using the new DuraDrive DI natural gas system, supplied by Utah-based AGA Systems. During EPA testing the DuraDrive DI set a record for efficiency on an eight-cylinder natural gas truck, achieving 23 mpg (10.2

Texas 259
article thumbnail

All 2010 Chevy and GMC V8 Trucks Feature Variable Valve Timing

Green Car Congress

V-8, variable valve timing helps deliver segment-leading fuel economy in the 2010 GMC Sierra and Chevy Silverado pickups. The Sierra and Silverado are EPA estimated at 15 mpg city and 22 mpg highway—better than the less powerful 2010 trucks from Ford and Toyota, GM points out. Toyota Tundra 4.6L

GMC 170
article thumbnail

GM expands B20 biodiesel lineup with new cars, crossovers and trucks

Green Car Congress

turbo-diesel engine and standard 6-speed manual or available 9-speed automatic transmission, it is expected to better the 46 mpg (5.11 l/100 km) EPA-estimated highway fuel economy of the first-generation diesel model. EPA estimates are not yet available. GMC Sierra (2500HD, 3500HD, Chassis Cab). Coupled with a 1.6L

GM 150
article thumbnail

2014 Chevy Silverado Pickup Gas Mileage Rises For Largest V-8 Engine

Green Car Reports

The 2014 Chevrolet Silverado 1500 (and its 2014 GMC Sierra 1500 twin) with the 6.2-liter The EPA ratings are 15 mpg city and 21 mpg highway for rear-wheel-drive models, and 14 mpg city and 20 mpg.' Even pickup trucks are getting better gas mileage these days.