Does afm disabler work?

Last Update: April 20, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

Asked by: Adell Hahn
Score: 4.6/5 (12 votes)

Range Technology's plug-in disabler works with older General Motors vehicles that still have AFM and new ones that use DFM. It will work with all GM vehicles with a V6 or V8 engine with AFM or DFM, including cars, SUVs and the popular Chevrolet Silverado and GMC Sierra pickup trucks.

Is AFM bad for your engine?

The AFM excessive oil consumption problem usually crops up on vehicles that go on long highway drives. These kinds of trips don't put much stress on the engine, so the AFM system deactivates pistons. ... Then, at a certain point, excess ring and cylinder wear can lead to engine damage.

What happens when you disable AFM?

When using a disabler, the AFM solenoids MUST remain plugged into the harness. If the computer does not "see" the solenoids, it will disable the fuel injectors for those cylinders. This will result in the engine operating in "4 Cylinder Mode" until the issue is resolved.

Should I delete my AFM?

An AFM Delete Kit is recommended when an AFM lifter fails or when doing performance upgrades. It replaces the AFM components with standard parts. When installing an AFM delete kit: You MUST upgrade to a non-AFM camshaft because the cam lobes in the four AFM cylinders are ground differently.

Does range AFM disabler void warranty?

Meet Range Technology's answer: the AFM Disabler. Our module is plug-and-play and reverts your vehicle back to stock when removed. Because no tuning is involved with your vehicle's computer, this product will not void the factory warranty.

Why and How to Disable GM's Active Fuel Management (AFM)!

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Will disabling AFM stop oil consumption?

Engines with AFM use a high-volume oil pump. When you eliminate the AFM system, the extra oil is no longer needed. Excess oil will be pushed out of the pressure relief valve into the oil pan. This will spray oil on the bottom of the cylinder walls which can cause oil burning, especially in high-rpm engines.

Can a GM dealer disable AFM?

As for turning AFM off, that's not a dealer doable things. There are some parameters than can be modified with a Tech2, but in the manner of also being patches, files, reflashes, etc. directly from GM. Unless GM made available a new ECM/TCM flash that eliminted AFM, it won't and can't happen at a dealer.

How much does it cost to delete AFM?

$895.00. We offer the INSTALLATION of Texas Speed & Performance AFM / DOD Delete Kit and the required Non AFM / DOD camshaft.

Does Tow Haul mode disable AFM?

Yes, M5 used with the tow/haul kills the AFM and is the best option, stock, for what I am doing.

Is it safe to disable Active Fuel Management?

The excess oil will cause spark plug fouling, poor performance, and damage to your catalytic converter. It will also cause you to fail emissions testing. If you have AFM lifter failure, either replace the AFM lifters with new units OR, install an AFM delete kit. Do NOT install an AFM disable device!

Why do AFM lifters fail?

We have found that most lifter faults are caused by oil pressure issues, or control issues. The AFM activation and deactivation is controlled by the Valve Lifter Oil Manifold or VLOM. ... Its job is to direct the flow of pressurized engine oil to the active fuel management intake and exhaust valve lifters.

Why is GM AFM bad?

The company implemented it to increase fuel economy, get better horsepower, and more torque. However, it appears that the AFM causes the oil to get past the pistons, so it enters the combustion chamber. There, it will get burned out, or it will harden and accumulate in the cylinders.

Why do Chevy engines tick?

Lifter tick is a common occurrence in V-8 engines like the Chevy 5.3-liter Vortec. This ticking sound is caused by the valve lifters, which are filled with oil during engine operation. When your engine sits, the oil can seep out of the lifters.

Does Active fuel Management really work?

On paper and even in the real world, AFM and DFM has shown some benefits when it comes to improved fuel mileage and GM has been able to claim 5-7% increases directly correlated to AFM. ... Some customers experience “shuddering” as AFM/DFM vehicles switch between running on half or all cylinders.

Do all 2008 5.3 have AFM?

It is standard on all of the 5.3 engines.

What year Silverados have AFM?

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.

Does my Silverado have dynamic fuel management?

Silverado and Sierra models equipped with the 5.3-liter V8 will not sport GM's Dynamic Fuel Management tech for the 2021 model year. No DFM for you. ... The other V8 engine options, the 6.2-liter V8, will still include the system.

What does a DOD delete do?

Administrator. An actual DOD delete involves replacing the lifters and valley cover along with various other little parts to complete get rid of the internal pieces involved in letting those 4 cylinders shutting down. The DOD pieces restrict cam size and that is why a lot of people delete it when doing cam swaps.

What GM engines have displacement on demand?

GM currently offers two versions of a 5.3-liter V8 engine with displacement on demand: the Vortec 5300 Gen IV V8 (LH6) engine for trucks, and the 5.3L V-8 Gen IV (LS4) engine for cars.

How much does it cost to replace a 5.3 engine?

The standard rebuild kit could cost between $3500 and $4500. The basic kit comes with the minimum components or parts you need to rebuild your engine. The amount of each engine part packed in this type of kit is fixed.

Will a Chevy dealer disable AFM?

The reason why the dealer can't turn it off is because GM does not have a program that allows it, and if you get caught doing it with a aftermarket tune they CAN void your power train warranty.

Does my 2021 Silverado have AFM?

General Motors is now building 2021 Chevy Silverado 1500 and 2021 GMC Sierra 1500 pickup trucks without Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) technologies due to the ongoing global microchip shortage. ... The change is expected to continue through the 2021 model year.