Boost DFM Disabler (Global B)

Fitment Notice

This product is designed specifically for Global B GM trucks and SUVs equipped with the 5.3L L84 or 6.2L L87 engines.

Compatible models include:

• 2022.5-2025 Silverado & Sierra
• 2021-2024 Tahoe/Suburban/Yukon

At this time, we do not support:

• 2019-2022 Silverado & Sierra with 10-speed transmissions
• 2020 Suburban/Tahoe/Yukon with 10-speed transmission

Reduce DFM Cylinder Deactivations By 95%+

Based on our testing and official testing from GM, the DFM system deactivates cylinders over 1,500 times per cylinder in a short 15-minute drive — operating with less than all 8 cylinders approx. 60% of the time. 

Our DFM Disabler automatically activates within 3-5 minutes of driving and keeps your truck in V8 mode 100% of the time once it activates, even disabling zero-cylinder mode while coasting.

This reduces overall deactivations by over 95%, improving performance and protecting your engine.

Improved Reliability & Lifter Protection

By drastically reducing DFM deactivations, our Boost Disabler improves reliability and longevity of your lifters, protecting you from the dreaded lifter failure issues plaguing GM's V8 engines.

While our device prevents DFM from engaging during regular driving, it still allows your engine’s components — including lifters and oiling systems — to activate briefly at the beginning of each trip. This design helps keep everything lubricated and functioning properly, avoiding concerns of sticky oil from long-term inactivity.

Why Choose Boost?

Our device was engineered, developed, and tested in-house, and is proudly manufactured in the USA. Every Boost unit is built by an ISO-certified specialist based in Arizona.

Plus, our support team is the same team that designed it — giving you expert-level help and insight you won't find with overseas knockoffs.

Simple OBD Plug-and-Play

Unlike other disablers that plug into the engine control module (ECM), the Boost device installs safely and conveniently via the OBD-II port. This makes it easier to remove before dealership visits, and ensures no risk to your vehicle’s warranty status.

Near Zero Battery Drain

Our newest Boost DFM Disabler draws just 0.10mA when the vehicle is off — a 7x improvement over our already low-drain first-generation model.

You can leave it plugged in with total peace of mind.

Made in the USA

From design to delivery, every Boost disabler is 100% American-made. We're a small, US-based team building products we believe in, with quality and service you can trust.

• 2022.5-2025 Silverado & Sierra
• 2021-2024 Suburban/Tahoe/Yukon

Our device does not currently support Global A vehicles with 10-speed transmissions which includes 2019-2022 trucks and 2020 SUVs. We are currently working on a unit for these models.

For any vehicles with DFM that are part of the Global A platform, ie. pre-2022.5 trucks and pre-2021 SUVs please see our Blue AFM/DFM Disabler which is compatible with these models excluding 10-speed transmission,

Plug-and-Play Install

Step 1: Find the OBDII port & plug the Boost DFM Disabler into the OBDII port, you can plug it in with the vehicle turned on or off. If the vehicle is off it will blink a few times and then stay off - if it is turned on then it will blink and turn solid green after a few seconds.

Step 2: Once the LED light has turned a solid green, the device is properly communicating with the vehicle and you are ready to drive!

Our device has very low power draw and can remain plugged in for weeks at a time without draining your battery, but if you don't plan on driving your vehicle for a while we would advise unplugging it.