1999 - 2007
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Order This File Ask a QuestionThe Chevrolet Silverado 4.8 V8 285hp (1999 - 2007) produces 285bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 305bhp and 425Nm, a gain of 20bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.