Woinex OBD-II Extender Cable

Woinex OBD-II Extender Cable

 4.9 (8954 Reviews)

Plug-and-Play Install

Power V8 at All Time

Protect Lifter & Engine Lifespan

Woinex OBD-II Extender Cable

Woinex OBD-II Extender Cable

$24.99
$24.99 $34.99
SAVE 28% Sold out
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How It Works

Step 1 — Locate the OBD-II port under your dashboard.

Step 2 — Plug in the Woinex DriveFull™. No tools needed.

Step 3 — Start your truck. It works immediately.

Your engine stays in full V8 mode every drive.

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Description

Keep your GM engine in full V8 mode at all times. Improves throttle response, eliminates shudder, and reduces the risk of costly AFM/DFM lifter failure. Plug-and-play installation in 60 seconds. No tools, No tuning, No permanent changes. Unplug anytime and your truck returns to factory settings instantly.

Does not fit 10-speed transmissions, 2022+ Refresh models, or 2023–2025 model years. Please verify fitment before ordering.

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Notice & Regulation

Legal Notice

This product is legal under the provisions of the EPA Tampering Policy dated November 23, 2020. It has been verified to allow the vehicle to operate within standard emissions limits and is legal for on-street use in all states that follow the Clean Air Act and EPA Tampering Policy.

THIS PRODUCT IS NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. CARB testing is currently pending. Once a CARB Executive Order (E.O.) number is issued, this product will be updated to 50-state legal status.

If your state requires emissions testing, unplug the device at least 6–8 drive cycles before your scheduled test.

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    My buddy just had a lifter failure on his Sierra and the bill was over $6,000. I was not going to wait for that to happen to mine. This thing plugs right in, no tools, no mechanic. Been in for three months and not a single issue. Good stuff!

    Jason M.
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    I have a 2018 Silverado 5.3 and the shudder at highway speed was driving me crazy. Plugged this in and it was gone on the first drive. Truck feels completely different — smooth power, no more hesitation when I hit the gas. Took me less than a minute to install. Wish I had done this the day I bought the truck.

    James R.
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    I was worried about battery drain since I park my Tahoe for a few days at a time. Zero issues. Starts strong every morning. The shudder I had around 40 mph is completely gone. Simple fix for a problem that should have never existed in the first place.

    Marcus T.
    View full details

    Frequently Asked Questions

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    How does that Work?

    The CylinderGuard module plugs into your OBD2 port and sends a passive signal that prevents the ECU from engaging cylinder deactivation mode. It doesnot reprogram or write to your ECU— it simply interrupts the AFM/DFM trigger so all cylinders stay active every time you drive.

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    Which vehicles is it compatible with?

    CylinderGuard is compatible withV6 and V8 GM-powered vehiclesincluding Chevrolet Silverado, GMC Sierra, GMC Yukon, Cadillac Escalade, and more. Supported engine sizes:4.3L, 5.3L, 6.0L, and 6.2L across model years 2007–2022.

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    How to install? Do I did a Mechanic?

    Not at all. Find your OBD2 port (under the dash, driver's side), plug in the module, and start your vehicle. The entire process takes under 60 seconds with zero tools. To remove it, just unplug it, no trace left behind, vehicle stays completely stock.

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    What if I have trouble With My Order?

    We stand behind every unit we ship. If something isn't right,
    email us at [woinexofficial@gmail.com]
    and we'll make it right. We offer returns within 30 days on unused items.

    * See our full Return Policy for details.

    Why Getting a DFM/AFM Disabler?

    Built for GM truck owners who refuse to gamble with a $6,000 repair bill and laggy driving experience.

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    30 Seconds Plug-and-Play

    No tools. No mechanic. No tuning. Find the OBD-II port under your dash, plug it in, and drive. That is it.

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    Protects Against Costly Lifter Failure

    AFM lifters wear out every time your engine switches cylinders. This disabler keeps your V8 in full mode at all times. No more cycling. No more risk.

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    Fully Reversible. Zero Trace.

    Does not touch your ECU. Unplug it before any dealer visit and your truck returns to 100% factory settings instantly.

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    Smart Sleep Mode. No Battery Drain.

    Built-in low-power standby when your truck is off. Plug it in once and never think about it again.

    Does It Fit Your Vehicle?

    Compatible with 5.3L and under GM engines — fits 80+ models across Chevy, GMC, Cadillac, Buick, Pontiac, and more.

    Chevrolet 29 models
    Silverado 1500, Silverado 2500, Tahoe, Suburban, Avalanche, Colorado, Express, Trailblazer, SSR, HHR, Impala, Monte Carlo, Malibu, Cobalt, Equinox, Traverse, Captiva Sport, and more.
    GMC 13 models
    Sierra 1500, Sierra 2500, Yukon, Yukon XL, Canyon, Envoy, Savana, Acadia, Terrain, and more.
    Cadillac 12 models
    Escalade, Escalade ESV, Escalade EXT, CTS, STS, SRX, DTS, DeVille, and more.
    Buick 7 models
    Rainier, Rendezvous, Terraza, LaCrosse, Lucerne, Enclave, and more.
    Pontiac 9 models
    G6, Grand Prix, Torrent, Montana SV6, Solstice, GTO, Bonneville, and more.
    Saab 8 models
    9-7X, 9-5, 9-3, and select other models with compatible GM engines.
    Saturn 8 models
    Vue, Outlook, Relay, Sky, Aura, and other models with compatible GM engines.
    Isuzu 8 models
    Ascender, i-Series, and other models with compatible GM engines.
    Suzuki 8 models
    Equator, XL-7, and other models with compatible GM engines.

    Not sure if your vehicle is compatible?

    Contact Us or Check it @ Woinex.com/pages/drivefull-fit-check
    Check My Vehicle

    One Module, Full Protection.

    The switch that everything Truck Driver Needs.

    Plug-In & Drive

    installs in seconds, no tools needed

    GM Compatible 

    Fits Silverado, Sierra, Yukon, Escalade & more

    Full Cylinder Power 

    restores V8 performance instantly

    Tested By Many Driver ✅

      Our Solution™ vs. Dealership

      Compare the costs and benefits

      Woinex AFM/DFM Disabler

      • Plug into OBD-II port — done in 60 seconds
      • Zero ECU modifications
      • Keeps Your Engine Running Smoothly
      • Protect Engine Lifespan
      $129.99

      60 Second Plug & Play

      DEALERSHIP

      • Complex installation requires a shop
      • Requires full engine teardown
      • Permanent — can't undo without more labor
      • ECU reprogramming may void warranty
      $1,500–$3,000+

      Parts + labor

      Why 8,954+ Truck Owners Trust DriveFull™

      The simplest way to protect your GM V6/V8 engine from AFM/DFM damage.

      Full V8 Power. 24/7.

      Locks your engine in full-cylinder mode at all times. No more random V4 drops on hills, highways, or at idle. All 8 cylinders firing, always.

      Prevents Lifter Failure

      Stops the constant cylinder cycling that destroys lifters on GM engines. Prolong your engine life or avoid catastrophic failure completely.

      100% Safe — Zero ECU Changes

      Never touches your factory computer programming. Unplug it anytime to return to stock settings instantly. No trace, no risk.

      Smoother Ride. Instant Response.

      Eliminates the shudder and rough vibration caused by cylinder deactivation. Enjoy consistent acceleration every single drive.

      Compatible With 80+ GM Models

      Works with Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Camaro and dozens more GM V6/V8 models from 2007 to 2022.

      Ready to Transform Your Experience?

      Join thousands of satisfied customers who have already made the switch. Experience premium quality and exceptional service today.

      Shop Now

      30-Day Returns

      Secure Checkout

      Customers Review

      • YOU NEED THIS.

        Steven. P

      • It's good, mpg even went up

        Ernest's

      • A Wonder!!

        Esmeralda