Built for GM V6 and V8 owners
REVLOCK AFM/DFM Disabler for GM V6 & V8
- 10 second plug and play. No tools and no wiring.
- Stops the V8 to V4 cycling that wears out the AFM lifters.
- Zero ECU reprogramming. Unplug anytime to restore factory settings.
- Full V8 power held in on hills, towing and at idle.
Fits 80 plus GM models. Free tracked shipping. 60 day guarantee
- 60 day money back guarantee
- Free tracked shipping
- 10 second install
- 80+ GM models
Try it for 60 days. If it is not right for your truck, email us for a full refund. No hassle.
The hidden cost of AFM
Lifter Wear
The constant switch between full and half cylinders is hard on the AFM lifters. On these engines it is a known weak point.
Engine Shudder
That rough vibration when the truck drops to 4 cylinder mode is the deactivation cycle you feel. It runs every time the engine cycles down.
Costly Repair
When AFM lifters fail, the fix can mean a top end teardown. Owners report bills that run into the thousands.
What AFM Does To Your Engine
GM Active Fuel Management constantly switches your engine between full V8 and 4 cylinder mode. Every switch loads the lifters that AFM parks and wakes. Over time that cycling is what wears them out.
$89.95 now. Small next to a four figure lifter repair later.
No tools, no mechanic
Install In 10 Seconds
Plug it in. The light confirms it is active. You are protected.
Find your OBD-II port
Look under the dash on the driver side. It is the standard 16 pin port. Every GM truck and SUV has one.
Plug in REVLOCK
Line it up and push it in. No wiring, no programming and no tools. Takes about 10 seconds.
The light confirms it is locked
The LED confirms REVLOCK is active. Your engine now holds full cylinder mode. No more V4 drops and no more shudder.
Drive and forget it
Leave it plugged in. Your V8 stays a V8 on hills and highways. Unplug anytime to return to factory settings.
Why owners lock out AFM
Hold full cylinder mode, all the time
AFM shuts down half your cylinders to save a little fuel, then wakes them back up. That constant cycling is what stresses the lifters. Enthusiast forums and independent mechanics widely recommend keeping affected engines in full cylinder mode.
REVLOCK does exactly that. It holds all cylinders active so the deactivation cycle never runs. Plug it into the OBD-II port and the job is done.
- Holds full cylinder mode
- No deactivation cycling
- Unplug to restore factory
REVLOCK vs removing AFM by hand
Same goal. A fraction of the cost and the hassle.
| What matters | REVLOCK | Hardware removal or tune |
|---|---|---|
| Install time | 10 seconds | Shop visit |
| Engine disassembly | None | Often needed |
| Reversible | Unplug it | Permanent |
| Touches your ECU | No | Tune rewrites it |
| Typical cost | One time $89.95 | $1,500 to $3,000+ |
Why owners choose it
Full V8 power 24/7
Holds full cylinder mode at all times. No random V4 drops on hills, highways or at idle. Every cylinder firing.
Protects the AFM lifters
Stops the cylinder cycling that wears the lifters on these engines. Keep them out of the deactivation loop.
Zero ECU changes
Never touches your factory computer. Unplug anytime to return to stock instantly. It leaves no trace.
Smoother ride
Removes the shudder from cylinder deactivation. Consistent acceleration and a fuller exhaust note.
The simplest way to protect your GM V6 or V8
Works with Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Camaro, Corvette and dozens more GM V6 and V8 models from 2004 to 2022.
Compatibility
Does it fit your vehicle?
Fits 80 plus GM engines across Chevrolet, GMC, Cadillac, Buick, Pontiac, Holden and more. Tap a make to see the list.
Chevrolet 30 models
Avalanche5.3L V8 · 2007-2013
Avalanche6.0L V8 · 2007-2009
Camaro3.6L V6 · 2016-2024
Camaro6.2L V8 · 2010-2024
Caprice PPV6.0L V8 · 2011-2017
Colorado3.6L V6 · 2015-2020
Corvette6.2L V8 · 2012-2019
Equinox Sport3.6L V6 · 2008-2009
Express 15005.3L V8 · 2014
Impala3.9L V6 · 2007-2009
Impala5.3L V8 · 2006-2009
Malibu3.6L V6 · 2008-2012
Malibu3.9L V6 · 2006-2007
Monte Carlo5.3L V8 · 2006-2007
Silverado 15004.3L V6 · 2007-2021
Silverado 15005.3L V8 · 2007-2022
Silverado 15006.0L V8 · 2007-2013
Silverado 15006.2L V8 · 2009-2022
Silverado 1500 LD5.3L V8 · 2019
SS6.2L V8 · 2014-2017
Suburban5.3L V8 · 2014-2020
Suburban6.0L V8 · 2016-2018
Suburban6.2L V8 · 2019-2020
Suburban 15005.3L V8 · 2007-2014
Suburban 15006.0L V8 · 2007-2013
Suburban 25006.0L V8 · 2007-2013
Tahoe5.3L V8 · 2007-2020
Tahoe6.2L V8 · 2018-2020
Trailblazer5.3L V8 · 2006-2008
Uplander3.9L V6 · 2006-2009
GMC 12 models
Acadia3.6L V6 · 2007-2008
Canyon3.6L V6 · 2015-2020
Envoy5.3L V8 · 2005-2009
Sierra 15004.3L V6 · 2007-2018
Sierra 15005.3L V8 · 2007-2022
Sierra 15006.0L V8 · 2007-2013
Sierra 15006.2L V8 · 2007-2022
Sierra / Denali6.2L V8 · 2009-2018
Yukon5.3L V8 · 2007-2020
Yukon6.2L V8 · 2010-2020
Yukon XL 15006.2L V8 · 2014
Yukon XL5.3L V8 · 2015-2020
Cadillac 12 models
ATS3.6L V6 · 2013-2019
CT63.6L V6 · 2016-2018
CT6 (non Hybrid)3.0L V6 · 2016-2018
CTS3.6L V6 · 2004-2019
CTS6.0L V8 · 2006-2007
CTS6.2L V8 · 2009-2019
Escalade / ESV6.0/6.2L V8 · 2010-2020
Escalade ESV6.2L V8 · 2010-2013
SRX3.6L V6 · 2004-2009
STS3.6L V6 · 2005-2007
XT53.6L V6 · 2017-2019
XTS3.6L V6 · 2013-2019
Buick 7 models
Enclave3.6L V6 · 2008-2020
Envision2.5L L4 · 2017-2018
LaCrosse3.6L V6 · 2005-2019
LaCrosse5.3L V8 · 2008-2009
Rainier5.3L V8 · 2005-2007
Rendezvous3.5/3.6L V6 · 2006-2007
Terraza3.9L V6 · 2006-2007
Pontiac 9 models
G63.6L V6 · 2008-2009
G63.9L V6 · 2007
G83.6L V6 · 2008-2009
G86.0L V8 · 2008-2009
G86.2L V8 · 2009
Grand Prix3.8L V6 · 2007
Grand Prix5.3L V8 · 2005-2008
Montana3.9L V6 · 2006-2009
Torrent3.6L V6 · 2008-2009
Holden 10 models
VZ Calais SV63.6L V6 · 2006-2018
Commodore Wagon3.6L V6 · 2006-2018
VZ Commodore Sedan3.6L V6 · 2006-2018
Crewman / UTE3.6L V6 · 2006-2018
9C1 Police Special6.0L V8 · 2015-2018
Rodeo3.6L V6 · 2006-2011
Colorado3.6L V6 · 2006-2009
VE Commodore Omega3.6L V6 · 2006-2009
WL Statesman3.6L V6 · 2006-2017
WM Statesman / Caprice3.6L V6 · 2006-2017
Saab, Saturn, Isuzu & Suzuki 8 models
Saab Outlook XE3.6L V6 · 2007-2008
Saab Relay3.9L V6 · 2006-2008
Saab 9-7X5.3L V8 · 2005-2009
Saturn Aura XR3.6L V6 · 2007-2009
Saturn VUE XR / Red Line3.9L V6 · 2008-2009
Isuzu Aura XR3.6L V6 · 2007-2009
Isuzu Ascender5.3L V8 · 2005-2009
Suzuki XL23.6L V6 · 2007-2009
Not sure if your vehicle is compatible? Contact us with your year and model and we will confirm for free.
The 60 day engine protection promise
Run REVLOCK for a full 60 days. If it is not right for your truck, email us and we will refund every cent. No questions asked.
We can stand behind it because the fix is simple, reversible and it does exactly one job.
- Full refund
- No questions asked
- Free exchange
What arrives
More than a plug
Every REVLOCK order is built to make the fix easy from the moment it lands.
- The REVLOCK AFM and DFM disabler unit
- Plug and play. No tools, no wiring, no tune
- Simple quick start card in the box
- 60 day money back guarantee
- Friendly email support whenever you need it
Frequently asked questions
Will this harm my truck or change the ECU?
No. REVLOCK never changes your ECU programming. Unplug it and the truck returns to factory settings instantly.
How do I install it? Do I need tools?
No tools and no mechanic. Find the OBD-II port under the dash, plug REVLOCK in and wait for the light. It takes about 10 seconds.
What does it actually do?
It holds your engine in full V6 or V8 mode by keeping AFM and DFM from deactivating cylinders. That stops the cycling behind lifter wear and shudder.
Will it fit my vehicle?
It fits most GM V6 and V8 vehicles with AFM or DFM, including Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Camaro, Corvette, Colorado and Canyon, plus many Buick, Cadillac and Pontiac models from 2004 to 2022. Check the fitment list above or contact us.
Do I keep it plugged in while driving?
Yes. Keep it in the OBD-II port to hold full cylinder mode. It does not draw meaningful power. Set it and forget it.
What if I am not satisfied?
You are covered by a 60 day money back guarantee. If you are not happy, contact us for a full refund or a free exchange. No hassle.
Lock in your V8 before the lifters wear
$89.95 now, or a four figure lifter repair later. Protect your GM engine with a 10 second plug in. No tools, no mechanic and no ECU changes.
Protect my engine- Free tracked shipping
- Easy returns
- 60 day guarantee
REVLOCK is an aftermarket accessory that holds your engine in full cylinder mode. It does not modify emissions equipment. Fitment covers GM engines with Active Fuel Management or Dynamic Fuel Management. Always follow your local road and vehicle regulations. Individual results vary.
REVLOCK AFM/DFM Disabler for GM V6 & V8 · $89.95