Made in the USA
Marlow™ AFM/DFM Disabler
Prevents lifter failure & engine shudder
Warranty Safe - Zero ECU modifications
Full V8 power locked 24/7
Lifetime Warranty
If your vehicle experiences any issue or repair caused by V4 mode while using the Disabler, you’re protected for eligible repairs up to $8,000 for the lifetime of the device.
Trusted by Over 35,000 Drivers Worldwide
AFM/DFM Disabler
Real Experience from Real People
See what drivers like you are saying
Vehicle Compatibility List
2025 upgraded version — fits 80+ GM models across Chevy, GMC, Cadillac, Buick,
Pontiac, Holden, and more.
Chevrolet
29 models
Cadillac
12 models
Buick
7 models
Pontiac
9 models
Holden
10 models
Saab, Saturn, Isuzu & Suzuki
8 models
Install in 10 Seconds — No Tools Required
Plug it in. Blue light blinks. You're protected. That's it.
Find Your OBD-II Port
Located under your dashboard on the driver's side. It's a standard 16-pin port — every GM truck and SUV has one.
Plug In the NexDrive™ Disabler
Line it up with the port and push it in. No wiring, no programming, no professional skills needed.
Blue Light = Full V8 Protection
The Blue LED blinks to confirm it's active. Your engine is now locked in full-cylinder V8 mode — no more V4 drops, no more shudder, no more lifter stress.
Drive With Confidence
Keep it plugged in and forget about it. Your V8 stays a V8 — on hills, on highways, everywhere. Unplug anytime to return to factory settings instantly.
Your GM Engine Is Destroying Itself Every Time You Drive
GM's Active Fuel Management system constantly cycles your engine between
V8 and V4 mode. Every cycle stresses your lifters — until they fail.
Lifter Failure
The constant switching between V8 and V4 mode wears down your lifters prematurely. LT engines are notorious for this — it's not a matter of if, but when.
Engine Shudder
Feel that rough vibration when your truck shifts to 4-cylinder mode? That shudder isn't normal driving — it's your engine under stress every single time it cycles down.
$5,000+ Engine Repair
When lifters fail, you're looking at a full engine teardown or replacement. Truck owners pay thousands — or junk the engine entirely for $300 at a salvage yard.
Questions??
Absolutely not. The Marlow™ disabler never changes your original ECU programming. It's 100% safe for your vehicle. Simply unplug it and your truck returns to factory default settings instantly — no trace, no changes.
No tools and no mechanic needed. Find your OBD-Il port under the dashboard, plug the device in, and wait for the blue light to blink. The entire install takes about 10 seconds.
If keeps your engine running in full V6/V8 mode at all times by disabling the
AFM/DFM cylinder deactivation system. This prevents the constant V8-to-V4 cycling that causes lifter wear, engine shudder, and rough acceleration. You get full power, smoother driving, and long-term engine protection.
Yes — keep it plugged into the OBD-II port to maintain full-cylinder mode. It doesn't draw extra power from your vehicle. Think of it as set-it-and-forget-it protection.
We offer a 100% satisfaction guarantee. If you have any quality issues or aren't happy with the product, contact us anytime for a full refund or free exchange.
No hassle, no questions.