FN Tuned Throttle Response Controller
GMC Sierra 3500HD

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FN Tuned Throttle Response Controller
GMC Sierra 3500HD

$249.99
$299.99
-17%

Pay in 4 interest-free installments of $49.99 with Learn more

Kill the throttle lag in your GMC Sierra 3500 HD with the FN Tuned throttle response controller. It connects inline with your truck’s gas pedal sensor and modifies the throttle signal for instant power delivery. Customize the response with 36 settings, boost your security with Anti-Theft. Order the best Sierra 3500 HD accessory today!

SELECT YOUR SIERRA 3500HD:

FN Tuned is compatible with GMC Sierra 3500HD's all submodels and trim levels: AT4, Base, Crew Cab Classic, Denali, Denali Ultimate, H/D, Pro, SL H/D, SLE, SLE1, SLE2, SLT, W/T, Work Truck

Fast Shipping

100% Satisfaction Guarantee

2-Year Warranty

WHY CHOOSE FN TUNED

FULL POWER ON DEMAND

Eliminate throttle lag and pull, tow, or haul easier with all the power your truck has.

BLUETOOTH-CONTROLLED

No buttons to fiddle with—launch the app and tap through different modes.

FULLY PROGRAMMABLE

Four driving modes with nine aggressiveness levels for each to dial in the perfect response.

THEFT PROTECTION

Enable Anti-Theft mode and disable the gas pedal. Keep your peace of mind.

DRIVE SMARTER

Switch to Fn Slow and cruise efficiently or get precision on tricky terrain.

PLUG, PLAY, AND GO

No mechanics, no cutting wires, no hassle. Install in 15 minutes and GO!

WARRANTY-SAFE UPGRADE

Throttle response upgraded, factory settings untouched. Your warranty stays intact.

ZERO HASSLE, REAL SUPPORT

Comes with full coverage for 2 full years and real support straight from the U.S.

UNLOCK REAL POWER WITH FN TUNED THROTTLE RESPONSE CONTROLLER

The GMC Sierra 3500 HD is a heavy-duty beast that goes anywhere, does anything, and can tackle any tough condition, whether it’s the worksite or the campsite. However, the stock electronic throttle is laggy and lazy. That is the last thing you want in a beast like this.

The FN Tuned throttle response controller eliminates that lag. It plugs directly into the pedal sensor and modifies the factory throttle signal with vehicle-specific tuning. You get an instant and fully customizable throttle response. With 36 adjustable settings, FN Tuned lets you dial in acceleration for daily driving, towing, or off-roading. Installation is dead-simple with a plug-and-play design, the unit is controlled wirelessly, and the integrated Anti-Theft feature helps you protect your rig by disabling the gas pedal. FN Tuned is the best Sierra 3500 HD accessory on the market!

FN Tuned Throttle Response Controller for GMC Sierra 3500HD

Install in 15 Minutes. No Tools Needed.

  • ✔

    Turn off your vehicle and keep the key fob at least 35 feet away. This prevents the key fob from triggering the ECU, ensuring a complete electrical shutdown.

  • ✔

    Locate the pedal position sensor (usually behind or at the top of the gas pedal assembly) and unplug the factory connector.

  • ✔

    Connect the male and female ends of the FN Tuned harness to the corresponding sockets. Ensure you hear a “click” each time.

  • ✔

    Secure the FN Tuned module somewhere in the footwell area with the included zip ties, make sure the module or the wiring does not block any moving parts.

  • ✔

    Activate your unit using the mobile app.

Start ripping!

LOVED BY MANY

Real-world drivers have dropped thousands of five-star reviews, all raving about how Fn Tuned took their ride to the next level. Check them out and see what’s coming your way!

See Real World Reviews