Power figures · Cars, SUVs and vans

GMC chiptuning – Stage 1 power figures

12 engine variants across 2 models. Stock figures are manufacturer data; the figures after optimisation are our own experience, deliberately at the lower end of what is achievable.

Models

GMC Sierra 1500

K2XX (2014–2018)

Engine	Fuel	Stock	Stage 1	Gain
4.3 V6 EcoTec3 289	Petrol	289 PS · 415 Nm	305 PS · 440 Nm	+16 PS · +25 Nm
5.3 V8 EcoTec3 360	Petrol	360 PS · 519 Nm	380 PS · 550 Nm	+20 PS · +31 Nm
6.2 V8 EcoTec3 426	Petrol	426 PS · 623 Nm	445 PS · 650 Nm	+19 PS · +27 Nm

T1 (2019–2024)

Engine	Fuel	Stock	Stage 1	Gain
2.7 Turbo 314	Petrol	314 PS · 470 Nm	375 PS · 570 Nm	+61 PS · +100 Nm
3.0 Duramax 281	Diesel	281 PS · 623 Nm	345 PS · 750 Nm	+64 PS · +127 Nm
5.3 V8 EcoTec3 360	Petrol	360 PS · 519 Nm	380 PS · 550 Nm	+20 PS · +31 Nm
6.2 V8 EcoTec3 426	Petrol	426 PS · 623 Nm	445 PS · 650 Nm	+19 PS · +27 Nm

GMC Yukon

K2XX (2015–2020)

Engine	Fuel	Stock	Stage 1	Gain
5.3 V8 EcoTec3 360	Petrol	360 PS · 519 Nm	380 PS · 550 Nm	+20 PS · +31 Nm
6.2 V8 EcoTec3 426	Petrol	426 PS · 623 Nm	445 PS · 650 Nm	+19 PS · +27 Nm

T1 (2021–)

Engine	Fuel	Stock	Stage 1	Gain
5.3 V8 360	Petrol	360 PS · 519 Nm	380 PS · 550 Nm	+20 PS · +31 Nm
6.2 V8 426	Petrol	426 PS · 623 Nm	445 PS · 650 Nm	+19 PS · +27 Nm
3.0 Duramax 281	Diesel	281 PS · 623 Nm	345 PS · 750 Nm	+64 PS · +127 Nm

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Non-binding guide values. Stock figures are manufacturer data; figures after optimisation are experience from comparable vehicles – not a guaranteed property. The actual gain depends on the condition of the individual vehicle, fuel quality, production tolerances and fitted components. A power increase must be registered under § 19 (2) StVZO in Germany. Modifications to emission control systems are not offered.