CHEVROLET · E39A3 ECU

CHEVROLET BLAZER E39A3 tuning files

Tuning file coverage for the CHEVROLET BLAZER running the E39A3 ECU. Across the matched variants stock power runs from 340 to 340 HP. There are 3 distinct variants on file for this combination. Stage 1 and Stage 2 are the safe starting points for this platform. Every file is matched to the exact calibration on your vehicle and signed off by an operator.

Upload your file →All BLAZER coverage

Available solutions

What we can run on the E39A3 for this vehicle — the precise options narrow down by engine and software version.

Stage 1 Stage 2

Engine variants & ECU software

3 distinct variants for the CHEVROLET BLAZER on the E39A3 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3600 340HP
Controller brand: DELCO
ECU: E39A3
Stock power: 340 HP
ECU SW: 12654753
ECU HW: 12653997
SW upgrade: 12665201

Variant 2

ECU

Catalog engine: 3600 340HP
Controller brand: DELCO
ECU: E39A3
Stock power: 340 HP

Variant 3

ECU

Catalog engine: 3600 340HP
Controller brand: DELCO
ECU: E39A3
Stock power: 340 HP
ECU HW: CHE_

Related vehicles

Other vehicles built on the E39A3 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the CHEVROLET BLAZER on the E39A3?

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

Do you cover the E39A3 ECU software on this model?

Yes — the CHEVROLET BLAZER on the E39A3 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.