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.

Sierra 262

Sierra Fuel Economy Economy F-150 262

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 liter Duramax turbodiesel engine. Fuel economy for the 3.0-liter

Sierra 97

Sierra GMC Fuel Economy MPG 97

Green Car Congress

DECEMBER 13, 2012

V-6 EcoTec3 AFM VVT DI (LV3) for Chevrolet Silverado and GMC Sierra. The newly unveiled 2014 Chevrolet Silverado 1500 and GMC Sierra 1500 pickup trucks will deliver more power, more torque and improved fuel efficiency, partly due to a trio of all-new EcoTec3 engines designed specifically for the needs of full-size truck customers.

Sierra 218

Sierra Silverado 2014 Engine 218

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.

EPA 199

EPA Standards Emissions Light 199

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 The 8L90 also enables numerically lower rear axle ratios, which reduce engine rpm on the highway. EcoTec3 V-8 (L86) ( earlier post ).

GMC 210

GMC Chevrolet 2015 Yukon 210

Green Car Congress

AUGUST 8, 2012

The new certifications cover approximately 200 2010-2012 General Motors Chevrolet- and GMC-brand light-duty trucks and SUV platforms with 4.8- liter engines. The EPA certifications allow Icom to convert these popular fleet vehicles in the US market for propane/autogas bi-fuel use.

EPA 236

EPA GM Yukon Tahoe 236

Clean Fleet Report

MAY 22, 2021

According to dozens of automotive story headlines, the internal combustion engine, running on gasoline or diesel, is dead or dying as customers, auto companies and investors flock to electric powertrains. While 2045 may still be more than two decades away, emissions advances in internal combustion engines (ICE) are continuing.

Diesel 93

Diesel Emissions Fuel Economy Yukon 93