CHEVROLET · E38 ECU

CHEVROLET EXPRESS E38 tuning files

Here is what the catalog holds for the CHEVROLET EXPRESS on the E38. Across the matched variants stock power runs from 300 to 315 HP. Stage 1 and Stage 2 are the safe starting points for this platform. Each file is tied to the precise software on your car and checked before it goes out.

Upload your file →All EXPRESS coverage

Available solutions

Applicable work for the E38 on this vehicle. The available set firms up once the exact engine and software are known.

Stage 1 Stage 2

Engine variants & ECU software

3 distinct variants for the CHEVROLET EXPRESS on the E38 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 5300 315HP
Controller brand: DELCO
ECU: E38
Stock power: 315 HP
ECU SW: 12614088
SW upgrade: 12614231

Variant 2

ECU

Catalog engine: 5300 315HP
Controller brand: DELCO
ECU: E38
Stock power: 315 HP
ECU HW: 12620641

Variant 3

ECU

Catalog engine: 4800 300HP
Controller brand: DELCO
ECU: E38
Stock power: 300 HP

Related vehicles

Other vehicles built on the E38 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the CHEVROLET EXPRESS on the E38?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the E38 ECU software on this model?

Yes — the CHEVROLET EXPRESS on the E38 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.

How is the file delivered?

Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.