Single Tune 2007.5-2010 LMM Duramax for EFILive 2017-2019 3 out of 5 Wrenches

3 out of 5 Wrenches for installation (1 wrench being the easiest)

Levels 1–5 with up to 180 HP gain

5 in L x 4

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Single Tune 2007.5-2010 LMM Duramax for EFILive 2017-2019 3 out of 5 WrenchesYour choice of the 5 power levels, including light tow, heavy tow, race, sport economy and optimized stock for your 2007,2008,2009, or 2010 Chevy Silverado or GMC Sierra. Choose your power level HEAVY TOW For towing from 8,000lbs up to Gross Vehicle Weight Rating Wider torque curve assists heavy loads + 60 RWHP, + 120 ft lbs torque Exhaust temperatures drop up to 100F under full load LIGHT TOW For those towing below 8,000lbs Perfect balance of sport