Variant 1
ECU- Catalog engine
- 2700 272HP
- Controller brand
- DELCO
- ECU
- E39A
- Stock power
- 272 HP
- ECU SW
- 12663375
- SW upgrade
- 12664695
CADILLAC · E39A ECU
CADILLAC SRX E39A tuning files
Tuning file coverage for the CADILLAC SRX running the E39A ECU. The matched variants sit between 249 and 272 HP from the factory. We start conservative here — Stage 1 and Stage 2 are the dependable baseline. Your file is built against the exact ECU software on the car, then operator-verified.
Available solutions
Applicable work for the E39A on this vehicle. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
4 distinct variants for the CADILLAC SRX on the E39A ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 2700 272HP
- Controller brand
- DELCO
- ECU
- E39A
- Stock power
- 272 HP
- ECU SW
- 12663375
- ECU HW
- 12653997
- SW upgrade
- 12664694
Variant 3
ECU- Catalog engine
- 3600 249HP
- Controller brand
- DELCO
- ECU
- E39A
- Stock power
- 249 HP
- ECU SW
- 12651632
- SW upgrade
- 12661331
Variant 4
ECU- Catalog engine
- 3600 249HP
- Controller brand
- DELCO
- ECU
- E39A
- Stock power
- 249 HP
- ECU SW
- 12666077
- ECU HW
- 12653997
- SW upgrade
- 12661989
Related vehicles
Other vehicles built on the E39A controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the CADILLAC SRX on the E39A?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the E39A ECU software on this model?
Yes — the CADILLAC SRX on the E39A 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.