Performance Chip Tuning Hummer
Up to 30% more power for your Hummer
The Hummer catalog lists 8 engines (models: 2, generations: 2). All Hummer engines in the catalog are naturally aspirated, so they take the GAN GA and GAN GA+ tuning modules (up to 12% more power). Each engine’s figures are on its own page.
Hummer performance chip: more power, no ECU flash
More power and torque with no ECU flash and no new parts. The module only adjusts the engine sensor signals. Your factory warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothswitch modes from your phone
- 18 mapsto fine-tune your engine
- 15 minutesplug-and-play install
- IP67water and dust protection
- up to +12%with the GAN GA+ on naturally aspirated engines
GAN GA and GAN GA+ tuning modules for 8 naturally aspirated engines from Hummer; see the catalog for each engine’s figure.
- up to +30%more power
GAN GT: up to 30%, GAN GTL: up to 25%, GAN GA+: up to 12%.
- GAN APPpower control via smartphone
Switch between SPORT, DYNAMIC, ECO and STOCK in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping costs.
The biggest Hummer gains
The six engines with the biggest gains in our catalog. These are the top of the range, not typical figures.
| Model · generation | Engine | Fuel | STOCK | With GAN | Gain | Tuners and prices |
|---|---|---|---|---|---|---|
| H2 H2 | 6.2i | Gasoline | 409 hp / 563 Nm | 442 hp / 608 Nm | +33 hp | |
| H2 H2 | 6.2i | Gasoline | 393 hp / 563 Nm | 424 hp / 608 Nm | +31 hp | |
| H3 H3 | 3.7i | Gasoline | 239 hp / 328 Nm | 268 hp / 367 Nm | +29 hp | |
| H3 H3 | 3.7i | Gasoline | 242 hp / 327 Nm | 271 hp / 366 Nm | +29 hp | |
| H3 H3 | 3.5i | Gasoline | 223 hp / 305 Nm | 250 hp / 342 Nm | +27 hp | |
| H2 H2 | 6.0i | Gasoline | 321 hp / 488 Nm | 347 hp / 527 Nm | +26 hp |
Hummer tuning FAQ
Does the GAN module affect my Hummer factory warranty?
Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
Plug-in performance chip or flash tuner: which should I choose?
A flash tuner rewrites the maps in your ECU, and the flash counter records it. The GAN module adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute.
Hummer engines: what to know before you tune
Naturally aspirated Hummer engines
For 8 naturally aspirated engines from Hummer, there’s the GAN GA+: up to 12% more power and up to 15% better fuel economy in ECO mode. It’s plug-and-play: you can install it yourself, in most cases in under 15 minutes.
How to find your Hummer engine
Pick your model in the list above, then the generation by model year, and the engine by displacement and horsepower (see your owner’s manual or vehicle documents). The engine page shows the exact gain and the tuner price.