What Chevy trucks have active fuel management?
What Chevy trucks have active fuel management?
These four engines are the Vortec 5.3-liter V-8, Vortec MAX 6.0-liter V-8, 3.9-liter V-6 and 5.3-liter small-block V-8. Vehicles that are available with Active Fuel Management include the Chevrolet Avalanche, Chevrolet Impala, Chevrolet Silverado, Chevrolet Suburban,Chevrolet Tahoe and Chevrolet TrailBlazer.
Is the Chevy Silverado still using Active Fuel Management?
2019 5.3L V-8 DFM VVT DI (L84) for Chevrolet Silverado Chevrolet and GMC will temporarily stop producing 5.3L engines with Active Fuel Management and Dynamic Fuel Management in the face of semi-conductor shortages worldwide.
When to disengage Active Fuel Management lifter?
The active fuel management system is designed to disengage the lifter at the point of least load in the cycle of camshaft’s rotation, which would be while the lifter is riding on the base circle of the lobe.
What causes a LS Active Fuel Management lifter to collapse?
Decoupling anywhere other than the base circle can cause a violent collapse of the lifter instead of just disengaging the internal lock, causing the whole assembly to bind and seize, creating a collapsed lifter situation.
When do Chevy 5.3L engines stop using AFM / DFM?
The memo released today indicates that this change in the inclusion of AFM/DFM on 5.3L engines will run at least until the end of the 2021 model year. However, with no change in the supply of semiconductors worldwide, this engine change may run into the 2022 model year, GM-Trucks.com speculates.
When to replace a LS Active Fuel Management lifter?
If you simply replace a failed or worn lifter, you are only treating a symptom, and will likely do so multiple times, until the root cause is addressed.
2019 5.3L V-8 DFM VVT DI (L84) for Chevrolet Silverado Chevrolet and GMC will temporarily stop producing 5.3L engines with Active Fuel Management and Dynamic Fuel Management in the face of semi-conductor shortages worldwide.
When to change the oil in a GM lifter?
Refer to Owner Manual > Service and Appearance Care > Checking Things Under the Hood > Description and Operation > Engine Oil in SI. ⇒ If the engine oil is more than one quart low, an incorrect oil viscosity is being used or if poor quality/contamination is observed, change the oil and filter.
The memo released today indicates that this change in the inclusion of AFM/DFM on 5.3L engines will run at least until the end of the 2021 model year. However, with no change in the supply of semiconductors worldwide, this engine change may run into the 2022 model year, GM-Trucks.com speculates.
