Cylinder Deactivation Disabler – OBD-II Plug-In, Keeps All Cylinders Active, Fully Reversible
Cylinder Deactivation Disabler – OBD-II Plug-In, Keeps All Cylinders Active, Fully Reversible
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Details
Plugs into the diagnostic port · All cylinders stay active · Unplugs anytime
Keep your V8 on all of its cylinders
This plug-and-play module turns off AFM and DFM cylinder deactivation, so the engine stops switching between V8 and V4 mode on every drive. It plugs straight into your vehicle's diagnostic (OBD-II) port, needs no tools and no tune, and you can unplug it anytime to go back to factory settings.
Key features
Easy installation, plug and play
- Stops the switching: no more cycling between V8 and V4 mode, which works your lifters on every drive.
- Full V8 power at all times: every cylinder stays active.
- Quick install: plug it in within seconds, no tools needed.
- Fully reversible: unplug it anytime and the vehicle is back to factory settings.
How is it different?
Turn cylinder deactivation off without tearing into the engine
The other options are a tune (an engine computer reflash) or a mechanical delete, and both mean a shop visit. This module does the same job of stopping the cylinder cycling, from the diagnostic port.
- Reversible in seconds: a tune or delete is not, this module is.
- No permanent change to your truck: nothing is rewritten or removed.
- No reflash and no shop visit: you fit it yourself.
- Install time: about 2 seconds, instead of a visit to the shop.
It is a simple, low-cost way to stop the switching on an engine that is still healthy.
Who it's for
Get the reliable performance you paid for
Stop the cylinder switching that works your lifters on every drive. This simple plug keeps your V8 on all of its cylinders, with no tune and no permanent changes.
- Stops the V8 to V4 switching on every drive
- Smooth power without the shudder
- Unplugs anytime to go back to factory settings
Fits: Chevrolet, GMC, Cadillac, Buick, Pontiac and Holden models with AFM or DFM, such as Silverado, Sierra, Tahoe, Yukon, Suburban, Colorado, Canyon, Camaro, Escalade and many more. Not sure about your vehicle? Contact us before ordering.
The problem
Your engine switches modes all the time
Active and Dynamic Fuel Management keep cycling the engine between V8 and V4 mode. Every cycle puts stress on the lifters.
Lifter wear
The constant switching between V8 and V4 mode wears the lifters, and the manufacturer's own service bulletins describe this failure pattern.
Engine shudder
That rough vibration around 40 to 50 mph is the moment the truck drops into 4-cylinder mode.
Costly repairs
When lifters fail, the fix is a full engine teardown of 12 to 14 hours of labour before parts, and AFM lifter repairs commonly run $3,000 to $8,500. Regular maintenance does not stop the switching.
How it works
Engineered for drivers
The module only turns off the cylinder deactivation function. It keeps your V8 firing on all cylinders without permanent modifications or tuning, and the engine computer stays untouched.
- Fully reversible: unplug it and the vehicle is back to factory settings.
- Quick installation: straight into the diagnostic port.
- No battery drain: it goes into a low-power sleep mode when the vehicle is off.
- No engine computer reprogramming: the factory software is not rewritten.
Key features
Reclaim your V8's full power
Stop the switching
No more cylinder switching on every drive.
Smooth performance
No hesitation, with steady V8 power delivery.
Fully reversible
Unplugs anytime to go back to factory settings.
How to use
No tools, no tuning, just plug and play
1. Locate your OBD-II port
You will find it under the dashboard on the driver's side.
2. Plug in the module
Push it into the port. No tools, no wiring and no setup are needed.
3. Start your vehicle
The module switches on by itself and starts working straight away.
4. Drive with full power
Enjoy smooth driving with no V4 drops or shudder. To go back to factory settings, simply unplug it.
Questions people ask
What about my vehicle's factory warranty?
Unlike an engine computer flash or tune, it does not rewrite your vehicle software, and you can unplug it anytime to go back to factory settings. Warranty coverage is decided by your vehicle manufacturer and dealer, so if you have questions about your coverage, check with your dealer before installing.
How difficult is the installation?
You don't need a mechanic or a toolbox. It plugs directly into the diagnostic port, usually found under the dashboard, in seconds. Once it's in, it starts working straight away, with no programming and no permanent modifications.
Will leaving it plugged in drain my battery?
It only draws power when the engine is running and goes into a low-power sleep mode when the vehicle is off. It is designed to stay plugged in during normal daily use. If the truck will sit for weeks, unplug it.
Does it help with lifter wear?
By keeping all cylinders active, it stops the constant switching that works the lifters on every drive, and the shudder that comes with it. It cannot repair an engine that is already damaged, so if yours is ticking, have it checked first.
Good to know
- For engines with AFM or DFM cylinder deactivation only. Check that your make, model and year are compatible before ordering.
- It cannot repair an engine that is already damaged. If your engine is ticking, have it checked first.
- Warranty coverage is decided by your vehicle manufacturer and dealer. Ask your dealer if you are unsure.
- If the vehicle will sit unused for weeks, unplug the module.
Specifications
- Type: plug-in module that turns off AFM and DFM cylinder deactivation
- Engines: V8 and V6 with AFM or DFM
- Connection: OBD-II diagnostic port, under the dashboard on the driver's side
- Install: about 2 seconds, no tools, no wiring, no setup
- Software: no reflash, the factory engine software is not rewritten
- Power: draws power only with the engine running, low-power sleep mode when off
- Reversible: unplug anytime to return to factory settings
- Makes: Chevrolet, GMC, Cadillac, Buick, Pontiac, Holden (model years 2007 to 2026 in the fitment list)
What's in the box
- 1 × plug-in cylinder deactivation module