What year did the 5.3 get AFM?
The 5.3L V8 engine, commonly known as the "5.3 engine", first received Active Fuel Management (AFM) technology in 2005. AFM, also called cylinder deactivation, is a fuel-saving feature that allows the engine to seamlessly shut off half of its cylinders under light load conditions to improve fuel efficiency.
What is Active Fuel Management?
Active Fuel Management (AFM) is a technology developed by General Motors that allows a V8 engine to operate on only four cylinders under light load conditions, such as highway cruising. This helps improve fuel economy without sacrificing performance when more power is needed. The system monitors various engine parameters and can quickly re-activate the deactivated cylinders when the driver demands more power.
When Was the 5.3L V8 Engine Introduced?
The 5.3L V8 engine, also known as the Vortec 5300, was first introduced by General Motors in 1999 as part of the company's Gen III small-block V8 engine family. It was used in a wide range of GM trucks, SUVs, and sedans throughout the 2000s and 2010s.
When Did the 5.3L V8 Get AFM?
General Motors began equipping the 5.3L V8 engine with Active Fuel Management in 2005. This allowed the engine to seamlessly switch between eight-cylinder and four-cylinder operation, improving fuel economy by up to 6% under light load conditions. The 5.3L V8 with AFM was first used in the 2005 Chevrolet Silverado and GMC Sierra full-size pickup trucks.
Benefits of AFM on the 5.3L V8
- Improved fuel economy, up to 6% better under light load conditions
- Maintains full V8 power and performance when needed
- Transparent operation - drivers may not even notice when cylinders are deactivated
- Reduced emissions due to more efficient engine operation
The addition of Active Fuel Management technology to the 5.3L V8 engine in 2005 was an important milestone that helped improve the fuel efficiency of GM's popular truck and SUV models without compromising performance.
Is the 2011 5.3 a good engine?
Overall, the Chevy 5.3 liter engine is a reliable engine that can last for many years if it is properly maintained. Drivers who take good care of their engines can expect to get 200,000 miles or more out of them.
How do I know if my 5.3 has Active Fuel Management?
Engine Cover Markings — Many GM engines equipped with AFM will have a label or badge on the engine cover indicating “AFM” or “Active Fuel Management.”
Can AFM be turned off?
An AFM Disabler is an electronic device that plugs into the OBD-II port, under the dashboard. It prevents the computer from switching over to 4 cylinder mode. It's a simple and effective way to turn off the AFM system.
Can you turn off Chevy AFM?
An AFM Disabler is an electronic device that plugs into the OBD-II port, under the dashboard. It prevents the computer from switching over to 4 cylinder mode. It's a simple and effective way to turn off the AFM system.
What year to avoid AFM?
The AFM system is supposed to disable engine cylinders when you're not using them to help you save gas. Unfortunately, it was faulty, especially in the years between 2010 and 2014, which are definitely some of the Chevy Silverado model years to avoid.
What year did the 5.3 have problems?
The cars with this engine between 2010 and 2014 are the most likely to run into this trouble, which was so terrible it led to many drivers attempting a class-action lawsuit to receive reparations for the awful oil consumption their car dealt them.
Do all 5.3 have cylinder deactivation?
Yes. 5.3 and 6.2, unless your 19-22 5.3 is stated with the window sticker (idk if theres a code) that the 5.3 is to come without DFM. 2500's never have or will come with AFM/DFM.
How to tell if LS has an AFM?
The AFM system can be identified by its components.
- Valley Cover - The AFM cover is called the Lifter Oil Manifold Assembly (LOMA). It's ribbed with solenoids on the underside.
- Engine Block - All Gen.
- Lifters - AFM engines use special lifters for cylinders 1, 4, 6, and 7.
Does a 2010 5.3 have an AFM?
Truck Trend Garage: 2010 Chevy 1500 Silverado Active Fuel Management System. Question:I own a 2010 Chevy 1500 Silverado with a flex-fuel 5.3-liter Vortec V-8. The motor has an Active Fuel Management system that deactivates from V-8 to V-4 under certain conditions. This is my second vehicle with this system.
Does 2005 5.3 have an AFM?
Active Fuel management (AFM) and Displacement on Demand (DOD) are the same thing: a system developed by General Motors that deactivates cylinders during periods of low engine load. It was used on certain 5.3L, 6.0L, and 6.2L engines starting in 2005 and continued until the release of late-model direct-injected engines.
