GMC Sierra 4.8 V8 295hp ECU Tuning File

The GMC Sierra 4.8 V8 295hp (1999 - 2007) produces 295bhp and 414Nm in standard form. Our Stage 1 ECU tuning file raises output to 315bhp and 435Nm, a gain of 20bhp and 21Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.