MPG Sierra Standards 
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 2014 GMC Sierra.
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 These materials reduce mass and increase strength.
Green Car Congress
SEPTEMBER 16, 2010
Were a more stringent fuel economy standard to be implemented, 63% said it was likely the cost of vehicles will increase too much. If President Obama were to implement a 60 mpg by 2025 rule, 28% of respondents would feel more favorable toward him, while 14% would feel less favorable. The standards will cover model years 2017 to 2025.
Green Car Reports
SEPTEMBER 2, 2014
At the dawn of this century, four-speed automatics were the standard; now it''s six speeds--and eight-speed automatics are coming on strong. Future models of the Chevrolet Silverado and GMC Sierra pickup trucks will.'
Green Car Congress
OCTOBER 23, 2014
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 l/100 km) highway.
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. 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.
Green Car Congress
JANUARY 18, 2017
turbo-diesel engine and standard 6-speed manual or available 9-speed automatic transmission, it is expected to better the 46 mpg (5.11 turbo-diesel and be paired with a 6-speed automatic transmission, and it is expected to achieve a GM-estimated 40 mpg (5.88 GMC Sierra (2500HD, 3500HD, Chassis Cab). Coupled with a 1.6L
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