Bully Dog 49003EO Thruster Throttle Booster – 2008-2020 Duramax

Eliminate frustrating throttle lag and transform the driving feel of your 2008-2020 Chevy Silverado or GMC Sierra 2500/3500 HD with the Bully Dog Thruster Throttle Booster (part #49003EO).

Modern Duramax trucks use drive-by-wire throttle systems that intentionally soften pedal response. The result is noticeable delay when accelerating, merging, towing, or simply wanting crisp throttle input. The Bully Dog Thruster sits inline between the accelerator pedal position sensor and the factory wiring harness, boosting the signal for sharper, more immediate response while remaining fully adjustable.

Key Features

• Dramatically improved throttle response — Reduces lag and delivers quicker acceleration when you need it
• On-the-fly adjustability — Rotary control knob lets you dial sensitivity from mild to aggressive (or dial it back for slick conditions) without stopping
• True plug-and-play installation — OE-style waterproof connectors simply unplug and reconnect; no cutting, splicing, or permanent modifications
• Weatherproof construction — Built for real-world truck use, including wet and dusty environments
• CARB Certified (EO #D-784-8) — Legal for sale and use in California and other CARB states
• 100% reversible & warranty-friendly — Leaves no residual codes in the PCM and can be removed at any time

Fitment

Fits 2008–2020 Chevrolet Silverado and GMC Sierra 2500HD / 3500HD equipped with the 6.6L Duramax (LMM, LML, and L5P engines).

Why Drivers Love It

Whether you’re towing a heavy trailer, climbing grades, merging into traffic, or just want your Duramax to feel more responsive day-to-day, the Thruster makes a noticeable difference without any tuning, power-adder complexity, or emissions concerns. Installation typically takes about 15–20 minutes with basic hand tools.

What’s Included: Bully Dog Thruster Throttle Booster module, control knob, wiring harness with OE-style connectors, and mounting hardware.

Warranty: 1-Year Limited Warranty

Give your Duramax the crisp, confident throttle response it should have had from the factory.