General Motors employs a number of different technologies to boost fuel economy, but one of these technologies, namely Active Fuel Management (AFM), has nearly been phased out from the 2022 Silverado engine lineup.
For those readers who may be unfamiliar, Active Fuel Management Cylinder Deactivation technology, or AFM for short, works to reduce fuel consumption by “shutting down” engine cylinders under light driving conditions. Given maximum engine power is not required during the majority of everyday driving, AFM works to deactivate engine cylinders when they are not needed, such as when cruising on the highway, thus saving on fuel. When more power is needed, the cylinders are reactivated.
The 2019 Chevy Silverado 1500, which marked the launch of the completely overhauled fourth-generation for the light-duty pickup on the GM T1 platform, offered three engines outfitted with AFM technology, while two engines had a related technology known as Dynamic Fuel Management (DFM). Meanwhile, the 2014 Chevy Silverado overhaul (K2 platform) had AFM on all three engines.
Now, however, with the introduction of the fully refreshed 2022 Silverado, only one engine is outfitted with AFM, namely the turbocharged 2.7L I4 L3B gasoline engine. To note, the turbocharged 2.7L I4 L3B gets a big torque boost for the 2022 model year, up to 420 pound-feet, a 20-percent increase compared to the 348 pound-feet produced previously.
The other three engines in the 2022 Silverado lineup, including the naturally aspirated 5.3L V8 L84 gasoline engine, the naturally aspirated 6.2L V8 L87 gasoline engine, and the 3.0L I6 LM2 turbodiesel Duramax, do not feature AFM. The L84 and L87 both feature DFM, while the 3.0L I6 LM2 does not feature either AFM or DFM.
With this in mind, it becomes apparent that AFM is slowly going away from the Silverado engine lineup. In its stead, the engine lineup is adopting either DFM, or, as is the case for the LM2 diesel, nothing.
Check out the table below for a summary of AFM and DFM technology incorporation for the last several model years of the Chevy Silverado, including the fully refreshed, T1-based 2022 Silverado:
|K2||T1 Launch||T1 Refresh|
To note, some 2021 and 2022 Silverado models that normally would come with AFM or DFM are not equipped with either feature as a result of the ongoing global microchip shortage, as GM Authority covered previously.