GMC Sierra 2017+ tuning files
Typical stock and Stage 1 figures for each engine. Open an engine for torque, ECU and technical data.
Engine
Stock
Stage 1
Gain
4.3 V6 285hp
285 hp
305 hp
+20 hp
5.3 V8 355hp
355 hp
375 hp
+20 hp
6.0 V8 360hp
360 hp
383 hp
+23 hp
6.2 V8 420hp
420 hp
440 hp
+20 hp
6.6 V8 445hp
445 hp
500 hp
+55 hp
Figures are typical for a stock vehicle in good condition. Actual results depend on condition, fuel quality and fitted hardware.