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Active Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors. It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy .
The federal investigation covers select Chevrolet, Cadillac, and GMC trucks and SUVs built with the 6.2-liter L87 V-8 between the 2019 and 2024 model years. Feds Investigating 877K GM SUVs ...
The High Value engine family from General Motors is a group of cam-in-block or overhead valve V6 engines.These engines feature cast iron blocks and aluminum heads, and use the same 60° vee bank as the 60° V6 family they are based on, but the new 99 mm (3.90 in) bore required offsetting the bores by 1.5 mm (0.059 in) away from the engine center line.
The Active Fuel Management system can shut down the middle two cylinders under low-power conditions. [2] Cylinder liners are spun nodular iron. [2] The low-output work truck variant runs 10 psi of boost, the 390 lb⋅ft variant runs 20 psi, and the 430 lb⋅ft variant runs 27 psi. [2]
Power and torque ratings for SUV and pickup truck applications are the same as each application's LY5 rating. Variable valve timing was added for the 2010 model year. Active Fuel Management is standard on this model for fuel economy purposes. [60] Applications: 2007–2013 Chevrolet Avalanche; 2007–2013 Chevrolet Silverado 1500
[13] 2021 was its final model year in the Chevrolet Silverado and GMC Sierra 1500, as the 6-speed automatic transmission was phased out. The Chevrolet Express and GMC Savana are the last vehicles to use the 4.3L but do not feature Active Fuel Management and their version of the engine is referred to as the LV1. Applications:
The dual-fuel 235 hp (175 kW; 238 PS) LW2 version was able to run on petrol and autogas. The LW2 engine was based on the low-output LE0 V6. It featured a factory-fitted dual-fuel system developed by IMPCO, different valves, and hardened titanium valve seats. This motor was available exclusively in Holden vehicles from 2005–2012. Applications: [7]
The Chevrolet Avalanche is a four-door, five- or six-passenger pickup truck that was manufactured by General Motors. The Avalanche was a hybrid between the Chevrolet Suburban SUV and the Chevrolet Silverado pickup truck, sharing the chassis with the Suburban. Unlike a typical pickup truck where the bed is mounted separately from the cab on the ...