"Selling Fast — Limited Stock!"
LifterGuard™ AFM/DFM Disabler
LifterGuard™ AFM/DFM Disabler
🛡️ Stops AFM/DFM Lifter Damage Before It Starts
💪 Full V8/V6 Power 24/7 — No More V4 Drop
🔌 10-Second OBD-II Install — No Tools, No Mechanic
♻️ Zero ECU Changes — Unplug Anytime To Return To Stock
✅ 30-Day Satisfaction Guarantee + Free Shipping
Low stock
Today Only — Included FREE With Your Order
Every order arrives in a premium gift box — ready to gift, at no extra cost.
✓ Added automatically to your order — no code needed
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LifterGuard™ AFM/DFM Disabler
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WARNING: LOW STOCK NOTICE
LifterGuard ships in small batches and this 50% off launch price is selling fast. Grab yours now before this run sells out. PS: This special offer is only available here. Beware of cheap, untested clones.
LifterGuard ships in small batches and this 50% off launch price is selling fast. Grab yours now before this run sells out. PS: This special offer is only available here. Beware of cheap, untested clones.
Will this fit my truck?
Will this fit my truck?
LifterGuard fits 80+ GM V6 and V8 vehicles with AFM or DFM, 2004–2022 — Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Camaro, Corvette and more. Use the fitment checker on this page to confirm your exact year, model and engine, or message us and we'll confirm for free.
Will it damage my truck or change the ECU?
Will it damage my truck or change the ECU?
No. LifterGuard never reflashes or permanently alters your factory programming. There's nothing to undo — unplug it and your vehicle runs exactly as it did from the factory.
How do I install it? Do I need tools or a mechanic?
How do I install it? Do I need tools or a mechanic?
No tools and no mechanic. Find the OBD-II port under your dash on the driver's side, push LifterGuard in, and the blue LEDs blink to confirm it's active. The whole install takes about 10 seconds.
Will it void my warranty or throw a check-engine light?
Will it void my warranty or throw a check-engine light?
Under the Magnuson-Moss Warranty Act, a dealer can't void your entire warranty over an aftermarket accessory, and LifterGuard makes no permanent changes. It works within your vehicle's normal diagnostics and isn't designed to trigger engine lights. We still recommend unplugging before any dealer service visit.
Will It Fit My Vehicle?
Select your make, model and year. We’ll check it against our full compatibility list instantly.
Don’t see your vehicle? Message us — and you’re always covered by our 30-day guarantee.
Vehicle Compatibility List
2025 upgraded version — fits 80+ GM models across Chevy, GMC, Cadillac, Buick, Pontiac, Holden, and more.
Not sure if your vehicle is compatible?
Contact us with your year and model — we’ll confirm for free.
STOP THE #1 ENGINE KILLER
End The V8-to-V4 Cycling That Destroys Lifters
Every time AFM switches your engine between 8 and 4 cylinders, the collapsing lifters take the load — and on high-mileage LS and LT engines, that's where failure starts. LifterGuard holds full-cylinder mode so the cycling — and the wear — simply stops.
10-SECOND INSTALL
Plug It In. Blue Light Blinks. You're Protected.
Your OBD-II port sits under the dash on the driver's side. Line LifterGuard up, push it in, and the blue LEDs confirm you're in full-cylinder mode. No tools, no wiring, no programming, no shop visit.
FULLY REVERSIBLE
Zero ECU Changes — Back To Stock In Seconds
LifterGuard never touches your factory programming. Keep it plugged in day to day — or unplug it any time to return to factory operation instantly. No trace, no risk, warranty-safe.
Why GM Owners Trust LifterGuard
Most so-called fixes mean a shop visit, a full teardown, or permanent ECU changes. LifterGuard was built to do one job perfectly: hold your engine in full-cylinder mode, in 10 seconds, with zero changes to your truck.
What GM Truck Owners Are Saying
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3 hours ago
Plugged it into my 2015 Silverado 5.3 and the shudder I'd had for two years was gone immediately. Should've done this before I spent $200 on a mechanic telling me my lifters were starting to go. Best money I've spent on this truck.
4,127
198
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Drive on, Mike! 🔧
3h ago Like Reply
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6 hours ago
Was skeptical, thought it was just another OBD gadget. My buddy's a Chevy tech and said this is the one he actually uses on his own trucks. Three months in — no codes, no issues, V8 locked 24/7.
3,894
241
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Does it hold up when towing?
2h ago Like Reply
Full V8 up every hill with the boat behind me 👍
3h ago Like Reply
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1 day ago
Picked up a used Sierra with 97k miles. Every forum said disable the AFM before the lifters go. Found LifterGuard, plugged it in — 10 seconds. Runs smoother and I'm not stressing about a $5,000 repair anymore. Just bought a second one for my dad's Tahoe.
2,652
163
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Same, every Silverado forum says kill the AFM early.
2h ago Like Reply
Cheapest insurance you'll ever buy 🙌
3h ago Like Reply
LifterGuard vs Mechanical AFM Delete Kits
| LifterGuard | AFM Delete Kit | |
|---|---|---|
| 10-Second Install | ||
| No Engine Teardown | ||
| Unplug To Restore Stock | ||
| Under $100 |
Trusted by Industry Leaders
Engineered To Protect Your Engine
Tap the points to explore 👇
4 Blue LEDs = Active
The blue LEDs confirm LifterGuard is holding your engine in full-cylinder mode.
OBD-II Plug-In
Seats into the 16-pin OBD-II port under your dash — no wiring, no tools.
Full-Cylinder Lock
Blocks the AFM/DFM cycling so all cylinders keep firing — no V4 drop, no shudder.
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
⭐ 4.9 From 8,000+ GM Truck Owners
Why 8,000+ GM Owners Switched To LifterGuard
Rated Excellent by thousands of GM truck & SUV owners
🔧 LifterGuard: Protect Your GM Engine
📦 Quality Gear, Real US Support
🚚 Free Insured Shipping
✅ Built To Last
🔥 30-Day Money-Back Guarantee
📦 Quality Gear, Real US Support
🚚 Free Insured Shipping
✅ Built To Last
🔥 30-Day Money-Back Guarantee
📦 Quality Gear, Real US Support
🚚 Free Insured Shipping
✅ Built To Last
🔥 30-Day Money-Back Guarantee
📦 Quality Gear, Real US Support
🚚 Free Insured Shipping
✅ Built To Last
🔥 30-Day Money-Back Guarantee
Frequently Asked Questions
Is it compatible with my vehicle?
Is it compatible with my vehicle?
The 2025 upgraded version fits most GM V6/V8 vehicles with AFM or DFM — Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Camaro, Corvette, Colorado, Canyon, and many Buick, Cadillac, and Pontiac models from 2004–2022. Use the fitment checker above or message us with your year and model.
Will this damage my truck or modify the ECU?
Will this damage my truck or modify the ECU?
No. LifterGuard never changes your original ECU programming. Unplug it and your truck returns to factory default settings instantly — no trace, no changes.
Do I need to keep it plugged in while driving?
Do I need to keep it plugged in while driving?
Yes — keep it in the OBD-II port to maintain full-cylinder mode. It's built to sip power, not drain it, so it's true set-it-and-forget-it protection. If the vehicle will sit for over a week, just pull it out.
Will it hurt my fuel economy?
Will it hurt my fuel economy?
Cylinder deactivation only saves about 1–2 MPG, so running full-cylinder can cost a small amount of highway MPG depending on how you drive. Most owners consider that a fair trade against a lifter job that runs into the thousands.
What if I'm not satisfied?
What if I'm not satisfied?
You're covered by our 30-Day Satisfaction Guarantee. If it doesn't do what we said, or you're simply not happy, contact us within 30 days of delivery for a full refund or a free replacement.
Kevin R.
Need this for my Sierra, that V4 shudder drives me nuts 😩