Livernois Motorsports MyCalibrator Tuner (LPP611105)
Fits 2014-2018 6.2L V8
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A tune is a reprogram of the truck's engine computer (ECU) that adjusts fuel, timing, and shift settings. This one is a self-contained handheld device (MyCalibrator) you plug into the OBD2 port yourself.
why this one — Livernois publishes an actual dyno-style gain number specific to the 6.2L (over 27whp/47wtq) rather than vague marketing language, and confirms both Chevrolet Silverado and GMC Sierra 6.2L (2014-2018 High Country/Denali trims specifically). Note: this same device also supports the 5.3L across 2014-2020, but this row tracks the 6.2L-specific application and gain numbers only.
Item not for sale in California.
Gain shown is a manufacturer claim, not a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See our affiliate disclosure.