Bully Dog GT Tuner (40417)
Fits 2014-2016 6.2L V8
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Price tracked 8 times since Jul 30, 2026 at the stores we check daily, not eBay: low $399, high $643.50, currently $399.
where to buy · 3 retailers tracked
A tune is a reprogram of the truck's engine computer (ECU) that adjusts fuel, timing, and shift settings, loaded through a handheld device with a built-in gauge display.
why this one — This is Bully Dog's dedicated 6.2L Silverado tuner (2014-2016 only - a narrower span than the 5 Star/Livernois options above, which run through 2018). GMC Sierra owners have a separate Bully Dog SKU (BDX Tuner 40470) sold under the same 2014-2016 6.2L fitment - not the same part number, so not merged into this row.
AmericanTrucks listing states "Enhanced Horsepower, Torque, Throttle Response" and "Higher Fuel Mileage" but publishes no specific number.
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No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.