DiabloSport P2000 EXTREME Power Puck Performance Module Features: Increased Horsepower;Torque;Overall Performance Increased Fuel Efficiency Change Settings On The Fly Great For Towing Applications Does Not Exceed Factory Limits For Fueling Comes With Built In Boost Fooler Function Road;Street;Track Tested To Ensure Vehicle Safety 2 Year Limited Warranty Height: 2.50 Width: 6.50 Length: 6.50 Weight: 1.30 lbs Fitment: CHEVROLET 2001 - 2003 SILVERADO 2500 HD V8 6.6 2001 - 2003 SILVERADO 3500 V8 6.6 GMC 2001 - 2003 SIERRA 2500 HD V8 6.6 2001 - 2003 SIERRA 3500 V8 6.6