Cadillac STS original ECU files
6 original (stock) ECU files for the Cadillac STS: 3 ECU types and 4 engine versions. Find your exact file by its hardware (HW), software (SW) or calibration number and compare it with your own read.
ECU types in the Cadillac STS 3
Engine versions 4
All Cadillac STS files 6
| Vehicle | ECU | HW | SW | Calibration / upgrade | |
|---|---|---|---|---|---|
| Cadillac STS2.0 250hp | Delco E39A | — | 12664821 | 12660619 | €20 · Open |
| Cadillac STS3.6 238hp | Bosch ME9.6 | — | — | — | €20 · Open |
| Cadillac STS3.6 238hp | Bosch ME9.6 | — | — | — | €20 · Open |
| Cadillac STS3.6 238hp · LY7 | Bosch ME9.6 | 0261209024 | 1037375083 | — | €20 · Open |
| Cadillac STS3.6 258hp | Bosch ME9.6.1 | 0261209184 | 1037381480 | — | €20 · Open |
| Cadillac STS3.6 400hp | Bosch ME9.6 | 0261209023 | 1037393293 | 12623573 | €20 · Open |
All hardware, software and calibration numbers
Find the number from your ECU read (Ctrl+F) and open the matching file.
Hardware (HW) · 3
Software (SW) · 4
Tuning for Cadillac STS — done by our engineers
- Stage 1 / Stage 2 / ECO
- DPF / FAP OFF
- EGR OFF
- AdBlue / SCR OFF
- DTC OFF
- Speed limiter, Start&Stop
Questions
Are these files modified?
No. Every file is an original (stock) read of a Cadillac STS control unit, delivered exactly as read. If you need a modified file, order tuning below.
How do I find the right file?
Read the ECU with your tool and compare the hardware (HW) and software (SW) numbers — and the calibration when several files share one software number. The vehicle name alone is not enough: the identifiers decide.
How do I get the file?
Create an account on our file service, top up your balance and download the file straight away. Every original file costs €20.
My number is not listed. What now?
Send us the HW/SW numbers of your ECU on WhatsApp or by email. We check our full archive and reply.
Can you tune Cadillac STS?
Yes. We make Stage 1/2 files and DPF, EGR, AdBlue/SCR and DTC solutions for Cadillac STS (depending on the engine). Upload your read on our file service.