Performance Chip Tuning Chevrolet Express II (since 2003)
5 engines · +24 to +44 hp
Chevrolet Express II: 5 engines — 5 gas. Gains run from +24 to +44 hp, with up to +106 Nm more torque. GAN GTL from 249 EUR, GAN GT from 399 EUR. GAN GA+ from 199 EUR.
All Chevrolet Express II engines: exact gains
STOCK output, output with GAN, gain and price for each module.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Gasoline · 5 engines | ||||
| 6.6 LMM258 hp / 624 Nm | +44 hp+106 Nm |
GTL — 249 EUR · 294 hp GT — 399 EUR · 302 hp |
Select → | |
| 6.0i324 hp / 502 Nm | +26 hp+40 Nm |
GA — 219 EUR · 350 hp GA+ — 219 EUR · 350 hp |
Select → | |
| 5.3i310 hp / 334 Nm | +25 hp+27 Nm |
GA — 219 EUR · 335 hp GA+ — 219 EUR · 335 hp |
Select → | |
| 4.3i200 hp / 353 Nm | +24 hp+42 Nm |
GA — 199 EUR · 224 hp GA+ — 199 EUR · 224 hp |
Select → | |
| 5.3i294 hp / 441 Nm | +24 hp+35 Nm |
GA — 199 EUR · 318 hp GA+ — 199 EUR · 318 hp |
Select → | |
Each engine gets its own performance chip: GAN GT / GTL or GAN GA / GA+. Prices are per performance chip and include the current discount.
Not sure which engine you have?
The badge alone isn’t enough: in this generation, the same engine came with different horsepower ratings, each with its own calibration. Check the horsepower in your owner’s manual or vehicle documents and find the matching row.
Same badge, different factory power outputs in this generation:
Chevrolet Express II tune: what changes
The module plugs in between the sensors and the engine control unit (ECU) and adjusts their signals. It never rewrites your ECU software: your factory warranty is preserved, 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
- +44 hpbest in this generation
6.6 LMM 258 hp → 302 hp. The other engines gain +24 hp and up; check the table for each one.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 4 naturally aspirated engines: the GAN GA / GAN GA+ tuners; check the table for each engine’s numbers.
- 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.
Chevrolet Express II tuning FAQ
Which tuner do I need for my Chevrolet Express II?
Turbo engines take the GAN GT or GAN GTL; naturally aspirated engines take the GAN GA or GAN GA+. Find your engine in the table above – each row shows the tuner and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU flash tune without replacing any parts. The tuning module also works without replacing parts, but it does not change the ECU software: it adjusts the sensor signals, comes off in about a minute, and the OFF button in the app restores the factory settings.