Will disabling AFM void warranty?
The short answer is that disabling the Active Fuel Management (AFM) feature on your vehicle may potentially void your warranty, depending on the specific circumstances. AFM is a fuel-saving technology used by many automakers, and tampering with it could be considered a violation of the warranty terms.
Understanding Active Fuel Management (AFM)
Active Fuel Management, also known as Cylinder Deactivation, is a technology used by some automakers to improve fuel efficiency. It works by temporarily shutting off fuel and ignition to some of the engine's cylinders when the vehicle is under light load, such as cruising at a constant speed. This reduces the engine's workload and saves fuel. However, some drivers choose to disable AFM, either through software modifications or by physically disabling the system, in an attempt to improve performance or address issues related to the technology.
Warranty Implications of Disabling AFM
Most automakers consider the AFM system to be an integral part of the vehicle's design and engineering. Disabling or modifying this system could be seen as a violation of the warranty terms, which typically require the vehicle to be maintained and operated according to the manufacturer's specifications. If a problem arises that is directly related to the AFM system after it has been disabled, the automaker may refuse to cover the repair under the warranty.
Exceptions and Considerations
However, there may be some exceptions or mitigating factors to consider:
- If the AFM system is causing issues and the automaker is unable to resolve the problem, they may be more willing to cover the repair, even if the system has been disabled.
- Some aftermarket modifications or tuning services may offer a warranty or guarantee that covers any issues that arise from their work, including the disabling of AFM.
- In some cases, the automaker may allow the AFM system to be disabled for specific purposes, such as towing or hauling heavy loads, without voiding the warranty.
It's important to consult your vehicle's owner's manual and warranty documentation, as well as to communicate with your automaker or a trusted mechanic, before making any modifications that could potentially affect your warranty coverage.
What modifications do not void warranty?
What are some modifications that don't void a car warranty? Wheels, tires, shocks, cat-back exhausts, lighting, exterior styling upgrades, and manufacturer-approved parts/tunes allow added performance or customization without warranty conflicts.
Can an AFM disabler cause problems with a Chevy Silverado?
However, AFM-equipped GM vehicles like the Escalade, Tahoe, Silverado, Yukon, Sierra, or Suburban are prone to having low oil pressure or oil consumption issues, shuddering, excessive combustion chamber deposits, and lifter or camshaft problems related to cylinder deactivation.
Does AFM cause engine damage?
Increased Wear and Tear: AFM-related problems can cause additional stress on engine components, leading to accelerated wear and potential long-term damage if left unresolved. This can result in costly repairs and premature engine failure.
Does disabling AFM improve MPG?
Additionally, if you happen to spend all of your driving time in the range where the factor AFM V4 mode is the most efficient (and the V8 disabler turns it off), you will see an additional hit to the mileage (usually around 1 mpg).
What happens if you disable AFM?
When you eliminate the AFM system, the extra oil isn't needed. Excess oil will be pushed out of the pressure relief valve in the oil pan. This will spray oil on the bottom of the cylinder walls. This can cause oil burning, especially in high-rpm engines.
Can you turn off AFM with a scan tool?
For some drivers, these changes in engine performance are distracting or unwanted, which leads them to disable AFM altogether. While there are many ways to disable the system, using a scan tool is one of the most direct methods, and it can often be done without needing any extra devices or hardware.
What voids GM extended warranty?
Your limited warranty could be voided if the systems and parts under warranty are damaged by any of the following: Damage due to accident, misuse or alteration. Damage or corrosion due to environment, chemical treatments or aftermarket products.
Can you disable AFM with a scan tool?
For some drivers, these changes in engine performance are distracting or unwanted, which leads them to disable AFM altogether. While there are many ways to disable the system, using a scan tool is one of the most direct methods, and it can often be done without needing any extra devices or hardware.
Is there a class action lawsuit against GM for lifter failure?
Which vehicles are impacted? The GM engine valve-lifter class action lawsuit seeks damages for anyone who purchased or leased any 2014 to 2021 Buick (see also Buick lemon law), Cadillac, Chevrolet, and GMC vehicle equipped with a 5.3L, 6.0L or 6.2L V8 engine, and include the following cars: 2014 to present GMC Sierra.
Does an AFM disabler void warranty?
Unlike reprogramming the ECU or fully deleting the system, a plug-and-play disabler device does not void factory warranty.
