FlexDrive™ AFM/DFM Disabler
- Fits GM 4.3L V6 and 5.3L, 6.0L, 6.2L V8 engines
- Helps prevent lifter wear and engine shudder
- No ECU tuning, unplug any time to go back to stock
- Keeps every cylinder working, every drive
Fitment Check
Will FlexDrive Fit My Truck?
Choose your make, model and year. We'll check it against the FlexDrive fitment list instantly.
Can't find your vehicle? Send us a message. Every order is backed by our 30-day money-back guarantee.
“Works great on my 2011 GMC Sierra 1500. Great customer service too!”
“Works like it's supposed to! Immediate fix in my 2018 Chevy Silverado 1500 5.3L V8. A true plug-and-play device. Can't recommend enough.”
“Works as it should. Does not drain the battery. Would buy again! If you are questioning buying this… buy it! You won't regret it.”
“Seamless, no error codes, just plug n forget. The truck feels so much better, and the shudder when accelerating is now gone.”
Description
FlexDrive™ is a plug-in module for GM V6 and V8 engines with Active Fuel Management (AFM) or Dynamic Fuel Management (DFM). It plugs into the OBD-II port and keeps your engine running on all of its cylinders, so it stops switching back and forth.
- Helps protect your lifters from constant on and off switching
- No more shudder when the engine drops cylinders
- No tune, no reflash, no parts removed
- Unplug any time and the vehicle goes back to stock
What is in the box
- 1x FlexDrive™ AFM/DFM module (per unit ordered)
- FREE OBD-II extension cable (with Buy 2 or Buy 3)
- FREE FlexDrive Owner's Guide eBook (digital)
Fits these vehicles
- Chevrolet Silverado 1500 and GMC Sierra 1500, 2007 to 2022 (pre-refresh)
- Chevrolet Tahoe, Suburban and Avalanche, GMC Yukon and Yukon XL, 2007 to 2020
- Cadillac Escalade / ESV, Chevrolet Camaro, Corvette, Colorado and GMC Canyon
- Plus 80+ Buick, Cadillac, Pontiac, Holden, Saturn and other GM models
GM 3.6L / 4.3L V6 and 5.3L, 6.0L, 6.2L V8 engines with AFM or DFM. Not for diesel engines. Check your exact vehicle in the Fitment Check above or message us.
How it works
At cruising speed, your GM engine shuts off part of its cylinders to save a little fuel, then turns them back on, many times on every drive. FlexDrive™ plugs into the OBD-II port and keeps the engine on all of its cylinders, so the deactivation lifters are never told to switch.
Plug it in, start the truck and the LEDs blink to show it's working. Running on all cylinders may cost a little highway MPG depending on how you drive.
If the vehicle will sit unused for more than a few days, unplug FlexDrive, like any OBD-II accessory. Unplug it before emissions inspections or dealer visits.
Shipping and returns
Free shipping on every order. Orders are processed in 1 to 2 business days, and you'll get a tracking number by email as soon as your order ships.
Not right for your vehicle? You're covered by our 30-day money-back guarantee. Message us with your order number and we'll take care of it.
Warranty
Every FlexDrive™ comes with a 30-day money-back guarantee. A 1-Year Extended Warranty is available in the cart as a one-time add-on.
Real support from a real team. Reach us any time through our contact page and we'll reply within 24 hours.
“Works great on my 2011 GMC Sierra 1500. Great customer service too!”
“Seamless, no error codes, just plug n forget. The truck feels so much better, and since mine is getting up there in terms of mileage, that's when I decided I'm not waiting for the AFM system to fail. The AFM system doesn't really help whenever you need a little bit of power getting up a small grade, it would switch to V8 anyways. Plus the shudder you just feel in your bum whenever you're trying to accelerate is now gone.”
“As soon as I plugged it in I felt a difference in my truck, runs better. You don't feel the hard shifting from V8 to V4 and you can feel that you have more power behind the gas pedal. My truck only has 80,000 km and it's a 2016, but I heard if you don't chip it, around 200,000 you have major engine problems.”
“Works like it's supposed to! Immediate fix in my 2018 Chevy Silverado 1500 5.3L V8. Prevents the onboard computer from toggling the engine from V8 to V4, causing undue stress to the engine and making driving less enjoyable frankly. It's a true plug-and-play device that plugs into the diagnostic port under the dash and you're in business. Can't recommend enough.”
“Works as it should. Does not drain the battery. Would buy again! If you are questioning buying this… buy it! You won't regret it.”
“Worked great on my 2008 Silverado 5.3, improved mpg from 9 mpg to 16 mpg and no more annoying DOD.”
Vehicle Compatibility List
Fits 80+ GM models across Chevy, GMC, Cadillac, Buick, Pontiac, Holden and more.
Not sure your vehicle fits?
Message us with your year, model and engine and we'll confirm it for free within 24 hours.
Your GM Engine Takes a Beating Every Time You Drive
GM's Active Fuel Management keeps switching your engine between V8 and V4 mode. Each switch puts extra stress on your lifters, and over time that can lead to failure.
Lifter Failure
Switching back and forth between V8 and V4 mode wears your lifters out early. AFM/DFM engines are well known among owners for lifter problems, and they tend to show up sooner or later.
Engine Shudder
Notice a rough vibration when your truck drops into 4-cylinder mode? That shudder is your engine changing modes under load, again and again, every time you drive.
Thousands in Engine Repairs
When lifters fail, the fix can mean taking the engine apart or replacing it. Many owners end up paying thousands, and some give up and sell the truck for far less than it was worth.
Installs in 10 Seconds — No Tools Needed
Plug it in. The blue light blinks. You're all set. That's it.
Locate Your OBD-II Port
You'll find it under the dashboard on the driver's side. It's the standard 16-pin port that every GM truck and SUV comes with.
Plug In Your FlexDrive™
Line it up with the port and press it in. No wiring, no programming and no mechanic needed.
⚡ Done in 10 secondsBlue Light = Full-Cylinder Mode
The blue LED blinks to show it's working. Your engine now stays in full-cylinder mode: no more dropping to V4, no more shudder and less stress on your lifters.
Drive Worry-Free
Leave it plugged in and forget about it. Your engine keeps all its cylinders working, on hills, on the highway, everywhere. Unplug it any time to go right back to factory settings.
FlexDrive™ vs. Mechanical AFM Delete Kits
Skip the engine work. A fraction of the cost and hassle.
Why GM Truck Owners Choose FlexDrive™
The easiest way to protect your GM V6/V8 engine from AFM/DFM wear.
Full-Cylinder Power, All the Time
Keeps your engine in full-cylinder mode the whole time. No more sudden drops to V4 on hills, on the highway or at idle. Every cylinder working, every drive.
Helps Protect Your Lifters
Stops the constant cylinder switching that wears out lifters on AFM/DFM engines. Less stress on your lifters means a better shot at a long engine life.
No ECU Changes
Doesn't reprogram your truck's factory computer. Unplug it any time and your truck goes right back to its stock settings.
Smoother Drive, Better Sound
Gets rid of the shudder and rough vibration that come with cylinder deactivation. Enjoy steady acceleration and a fuller exhaust sound.
Fits 80+ GM Models
Works with Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Camaro, Corvette and dozens more GM V6/V8 models from 2004 to 2022.
What Truck Owners Are Saying
Real words from GM owners who plugged in FlexDrive™.
"We installed this on our 2015 Yukon XL a few months ago and have already noticed better performance. Acceleration isn't an issue anymore. It's great to be able to use the engine at its full capacity."
"This AFM disabler works really well. I recommend it to anyone who wants to protect their GM engine."
"Works perfectly. I noticed a real difference in throttle response and engine sound. Easy to use, well built and does a good job protecting the lifters."
"I bought two, one for a 2016 Chevy truck and the other for a 2013 Chevy truck. Works exactly as described, very easy to plug in and remove. My order arrived quickly."
Frequently Asked Questions
Everything you should know before you order.
30-Day Satisfaction Guarantee
If you're not completely happy with your FlexDrive™ AFM/DFM Disabler, just message us within 30 days of delivery for a full refund or a free replacement. No hassle. We stand behind every unit we sell.
Stop AFM Wear Before It Starts
$84.95 today or thousands in repairs later. Protect your GM engine with a 10-second plug-in: no tools, no mechanic, no ECU changes.
Protect My Engine Now
