• Savary AFM/DFM Disabler module for GM V8 trucks
  • Savary AFM/DFM Disabler plugged into the OBD-II port
  • Savary AFM/DFM Disabler stops V4 mode switching
  • Savary AFM/DFM Disabler installed under the dash
  • Savary AFM/DFM Disabler protects lifters from failure
  • Savary AFM/DFM Disabler removable with no ECU tune
  • Savary AFM/DFM Disabler fits GM Silverado Sierra Tahoe
  • Savary AFM/DFM Disabler ends the 40-50 mph shudder
  • Savary AFM/DFM Disabler packaging and module
  • Savary AFM/DFM Disabler 60-day money-back guarantee
#1BEST-SELLING AFM DISABLERGM Owners Top Choice
★★★★★Excellent 4.9/5 (20,000+ Drivers)

Savary AFM/DFM Disabler

Savary AFM/DFM Disabler

  • Designed in USA
  • Prevents lifter failure & engine shudder
  • Warranty Safe — Zero ECU modifications
  • Full V8 power locked 24/7
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Mike R.
Mike R.

The 40-50 mph shudder is gone and it doesn't drop into 4-cylinder anymore. Truck pulls like it did when it was new.

4 Verified Reviews

Beware of Imitations.

Some sellers sell cheap clones with no testing, no support, no guarantee. Savary is the only AFM disabler backed by a 100% satisfaction guarantee, free shipping, and a real team behind every unit.

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Fitment check

Will It Fit My Vehicle?

Select your make, model and year. We check it against our full compatibility list instantly.

Don't see your vehicle? Message us and we will help check it.

Description

Plug in. Drive smoother. Remove anytime.

  • Helps reduce unwanted AFM/DFM mode switching.
  • Plug-and-play installation from the OBD-II port.
  • Does not reprogram the ECU and can be removed before service.
  • Designed for compatible GM vehicles with AFM or DFM.
Processing & Shipping

Processing. Orders are prepared within 24 hours on business days.

Shipping. Delivery in 3-5 days with tracking on every order. Worldwide shipping available.

Returns. 60-day money-back guarantee. No restocking fees and no fine print.

Protect Your EngineEasy Plug-In SetupWarranty Safe DesignRestore Full PowerProtect Your EngineEasy Plug-In SetupWarranty Safe DesignRestore Full PowerProtect Your EngineEasy Plug-In SetupWarranty Safe DesignRestore Full PowerProtect Your EngineEasy Plug-In SetupWarranty Safe DesignRestore Full PowerProtect Your EngineEasy Plug-In SetupWarranty Safe DesignRestore Full PowerProtect Your EngineEasy Plug-In SetupWarranty Safe DesignRestore Full Power
★★★★★Rated 4.9/5 by 20,000+ drivers
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Happy Customers.
Savary AFM/DFM Disabler installed by a customer
★★★★★
Brad C, 44✓Verified Buyer

"No issues, no codes. Does what it’s supposed to. Easy to install and take off if needed. Throttle feels a bit better and mileage didn’t change. Worth it."

Savary AFM/DFM Disabler
Savary AFM/DFM Disabler$99.99$149.99🛒 Purchased on July 12th, 2026
Savary AFM/DFM Disabler installed by a customer
★★★★★
Marcus F, 39✓Verified Buyer

"Glad I picked it up. No problems so far. Used to get in and mess with settings, now I just get in and drive."

Savary AFM/DFM Disabler
Savary AFM/DFM Disabler$99.99$149.99🛒 Purchased on June 28th, 2026
Savary AFM/DFM Disabler installed by a customer
★★★★★
Ryan P, 52✓Verified Buyer

"Truck feels stronger, shifts smoother, and no hesitation when towing. Been running it for a while with no issues."

Savary AFM/DFM Disabler
Savary AFM/DFM Disabler$99.99$149.99🛒 Purchased on August 3rd, 2026
Savary AFM/DFM Disabler installed by a customer
★★★★★
Meggan M, 47✓Verified Buyer

"After dealing with lifter issues around 100k miles, I didn’t want to risk it again. Put this on my 2015 Silverado and it’s been running smoother since."

Savary AFM/DFM Disabler
Savary AFM/DFM Disabler$99.99$149.99🛒 Purchased on May 19th, 2026

Full fitment list

Vehicle Compatibility List

Fits 83 GM models across Chevrolet, GMC, Cadillac, Buick, Pontiac, Holden, Saturn, Saab, Isuzu and Suzuki. Tap a brand to see every model, engine and year.

Chevrolet30 models
ModelEngineYears
Avalanche5.3L V82007–2013
Avalanche6.0L V82007–2009
Camaro3.6L V62016–2024
Camaro6.2L V82010–2024
Caprice PPV6.0L V82011–2017
Colorado3.6L V62015–2020
Corvette6.2L V82012–2019
Equinox Sport3.6L V62008–2009
Express 15005.3L V82014
Impala3.9L V62007–2009
Impala5.3L V82006–2009
Malibu3.6L V62008–2012
Malibu3.9L V62006–2007
Monte Carlo5.3L V82006–2007
Silverado 15004.3L V62007–2021
Silverado 15005.3L V82007–2022
Silverado 15006.0L V82007–2013
Silverado 15006.2L V82009–2022
Silverado 1500 LD5.3L V82019
SS6.2L V82014–2017
Suburban5.3L V82014–2020
Suburban6.0L V82016–2018
Suburban6.2L V82019–2020
Suburban 15005.3L V82007–2014
Suburban 15006.0L V82007–2013
Suburban 25006.0L V82007–2013
Tahoe5.3L V82007–2020
Tahoe6.2L V82018–2020
Trailblazer5.3L V82006–2008
Uplander3.9L V62006–2009
GMC12 models
ModelEngineYears
Acadia3.6L V62007–2008
Canyon3.6L V62015–2020
Envoy5.3L V82005–2009
Sierra 15004.3L V62007–2018
Sierra 15005.3L V82007–2022
Sierra 15006.0L V82007–2013
Sierra 15006.2L V82007–2022
Sierra / Denali6.2L V82009–2018
Yukon5.3L V82007–2020
Yukon6.2L V82010–2020
Yukon XL 15006.2L V82014
Yukon XL5.3L V82015–2020
Cadillac12 models
ModelEngineYears
ATS3.6L V62013–2019
CT63.6L V62016–2018
CT6 (non Hybrid)3.0L V62016–2018
CTS3.6L V62004–2019
CTS6.0L V82006–2007
CTS6.2L V82009–2019
Escalade / ESV6.0/6.2L V82010–2020
Escalade ESV6.2L V82010–2013
SRX3.6L V62004–2009
STS3.6L V62005–2007
XT53.6L V62017–2019
XTS3.6L V62013–2019
Buick7 models
ModelEngineYears
Enclave3.6L V62008–2020
Envision2.5L L42017–2018
LaCrosse3.6L V62005–2019
LaCrosse5.3L V82008–2009
Rainier5.3L V82005–2007
Rendezvous3.5/3.6L V62006–2007
Terraza3.9L V62006–2007
Pontiac9 models
ModelEngineYears
G63.6L V62008–2009
G63.9L V62007
G83.6L V62008–2009
G86.0L V82008–2009
G86.2L V82009
Grand Prix3.8L V62007
Grand Prix5.3L V82005–2008
Montana3.9L V62006–2009
Torrent3.6L V62008–2009
Holden6 models
ModelEngineYears
Commodore SS / SS-V6.0L V8 (auto)2010–2017
Commodore SS / SS-V Ute6.0L V8 (auto)2010–2017
Calais V6.0L V8 (auto)2010–2017
Caprice / Caprice V6.0L V8 (auto)2009–2017
Statesman6.0L V8 (auto)2009–2013
9C1 Police Special6.0L V8 (auto)2009–2017
Saturn4 models
ModelEngineYears
Outlook XE3.6L V62007–2008
Relay3.9L V62006–2008
Aura XR3.6L V62007–2009
VUE XR / Red Line3.9L V62008–2009
Saab1 model
ModelEngineYears
9-7X5.3L V82005–2009
Isuzu1 model
ModelEngineYears
Ascender5.3L V82005–2009
Suzuki1 model
ModelEngineYears
XL73.6L V62007–2009

Not sure about yours? Use the fitment check at the top of this page, or message us and we will confirm it before you order.

The real problem

Your GM engine is destroying itself every time you drive.

AFM/DFM constantly switches cylinder modes. That cycling can create the shudder, hesitation and mechanical stress GM owners complain about.

$89.95 today, or a four-figure repair bill later.
warning

Lifter Failure

Constant mode switching can wear lifters prematurely and turn a small warning sign into a major repair.

vibration

40-50 MPH Shudder

That rough vibration when the truck drops cylinder mode is the drive feeling uneven under load.

payments

$4,000 to $8,500 Repair

When lifters fail, owners can face teardown labor, parts and downtime that cost thousands.

Frequently asked questions

Everything you need to know

Will this damage my truck or modify the ECU?
Absolutely not. The Savary AFM/DFM Disabler never changes your original ECU programming. It is 100% safe for your vehicle. Simply unplug it and your truck returns to factory default settings instantly, with no trace and no changes.
How do I install it? Do I need tools or a mechanic?
No tools and no mechanic needed. Find your OBD-II port under the dashboard on the driver's side, plug the device in and wait for the light to blink. The entire install takes about 10 seconds.
What does it actually do for my engine?
It keeps your engine running in full V6/V8 mode at all times by disabling the AFM/DFM cylinder deactivation system. That prevents the constant V8-to-V4 cycling that causes lifter wear, engine shudder and rough acceleration.
Is it compatible with my vehicle?
It fits most GM V6/V8 vehicles with AFM or DFM, including Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade and many Buick, Cadillac and Pontiac models from 2004 to 2026. Use the fitment check at the top of this page or see the full compatibility list above.
Do I need to keep it plugged in while driving?
Yes. Keep it plugged into the OBD-II port to maintain full-cylinder mode. It does not draw extra power from your vehicle. Think of it as set-it-and-forget-it protection.
Should I remove it before service?
Yes. Unplug it before dealer service, diagnostics or emissions checks, or whenever a technician needs the vehicle in factory behaviour. It takes a second and leaves no trace.
How fast does it ship?
Orders leave within 24 hours on business days and arrive in 3 to 5 days with tracking on every order. Shipping is free and we ship worldwide.
What if I'm not satisfied?
We offer a 100% satisfaction guarantee. If you have any quality issue or you are not happy with the product, you have 60 days to send it back for a full refund or a free exchange. No hassle and no questions asked.

100% Satisfaction Guarantee

If you're not completely happy with your Savary AFM/DFM Disabler, you have 60 days to send it back for a full refund or a free exchange. No hassle, no questions asked. We stand behind every unit we sell.

Stop AFM Damage Before It Starts

$89.95 now or $5,000+ later. Protect your GM engine with a 10-second plug-in — no tools, no mechanic, no ECU changes.

Protect My Engine Now
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