GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6
Green Car Congress
APRIL 1, 2013
V-8 EcoTec3 AFM VVT DI (L83) for Chevrolet Silverado and GMC Sierra. 2WD Pickup truck fuel economy comparisons. Cylinder deactivation, also known as Active Fuel Management (AFM), is now standard on all three engines for the Silverado and Sierra 1500. Click to enlarge. l/100 km) and 23 highway (10.2 Fuel economy. Power (hp).
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