GMC Chip Tuning
Up to 30% more power for your GMC
The GMC catalogue lists 28 engines (models: 9, generations: 9). For 14% of the engines, there are the GAN GT (up to 30% more power) and GAN GTL (up to 25%) tuning modules; for 24 naturally aspirated engines, the GAN GA and GAN GA+ (up to 12%). Each engine’s figures are on its own page.
GMC chip tuning without an ECU remap
The tuning module sits between the sensors and the engine control unit (ECU) and adjusts their signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothsmartphone mode control
- 18 mappingsfine tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- up to +30%more power with the GAN GT
Turbocharged engines gain +44 to +68 hp, depending on the engine.
- up to +12%for naturally aspirated engines with the GAN GA+
GAN GA and GAN GA+ tuning modules for 24 naturally aspirated engines from GMC; see the catalogue for each engine’s figure.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding delivery costs.
Choose your GMC model
Each model shows its generations: one click to a generation, two to an engine.
The biggest GMC gains
The six engines with the biggest gains in our catalogue. These are not typical figures but the top of the range.
| Model · generation | Engine | Fuel | STOCK | With GAN | Gain | Tuning modules and prices |
|---|---|---|---|---|---|---|
| Sierra Sierra | 6.6 2011-> | Petrol | 402 hp / 1037 Nm | 470 hp / 1213 Nm | +68 hp | GTL from 349 EUR GT from 519 EUR |
| Sierra Sierra | 6.6 (05.2007-2011) | Petrol | 370 hp / 895 Nm | 433 hp / 1047 Nm | +63 hp | GTL from 279 EUR GT from 459 EUR |
| Sierra Sierra | 6.6 (2006-2007) | Petrol | 367 hp / 881 Nm | 429 hp / 1031 Nm | +62 hp | GTL from 279 EUR GT from 459 EUR |
| Savana Savana | 6.6 (2007-2010) | Petrol | 258 hp / 624 Nm | 302 hp / 730 Nm | +44 hp | GTL from 249 EUR GT from 399 EUR |
| Sierra Sierra | 6.2i | Petrol | 420 hp / 609 Nm | 454 hp / 658 Nm | +34 hp | |
| Yukon Yukon | 6.2i | Petrol | 420 hp / 624 Nm | 454 hp / 674 Nm | +34 hp |
GMC chip tuning: questions
Does the GAN module affect my GMC warranty?
No. The module does not change the ECU software and can be removed at any time, so your manufacturer’s warranty is preserved. We also give an engine warranty: 2 years with the GAN GT, 1 year with the GAN GTL.
Tuning box or ECU remap: which should I choose?
An ECU remap permanently changes the maps in the ECU and leaves a trace in the flash counter. The GAN tuning module adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute.
GMC chip tuning: what to know about the engines
Which GMC models are in the catalogue
The catalogue lists 9 models from GMC. The most engines are listed for the Canyon (7), Sierra (6) and Sonoma (5). The biggest gain among the models is on the Sierra: up to +68 hp.
Naturally aspirated GMC engines
For 24 naturally aspirated engines from GMC, there is the GAN GA+: up to 12% more power and up to 15% lower fuel consumption in ECO mode. You can fit it yourself, in most cases in under 15 minutes.
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How to find your GMC engine
Choose your model in the list above, then the generation by model year and chassis code, and the engine by the power output in your registration document. The engine page shows the exact gain and the tuning module price.