The Automotive Clinic — Tuning Files

Software 55595656 55576791 55500370 55489650 5550 Siemens/Continental E98

19 master projects carry this software number, 19 with a modified version. Upload your read to have the tune transferred into your own file, or buy the file exactly as we hold it by software number. Modified files from $275, original (stock) files from $75 AUD. Trade accounts see their own pricing after log in.

Fitted to

Holden Colorado ×6
Holden colorado ×5
Holden trailblazer ×3
Holden ×2
Holden trailblazser
Holden Trailblaser
Holden Trailblazer

ECU

Siemens/Continental / Delco / E98
E98 / Delco
GM

Hardware / part numbers

E98

Read with

any full read from your flashing tool

Modifications available

Have the read? Upload it.
Your own file comes back with the modification built in, checked for a 100% match before it's offered.
Upload your read →
Can't read the ECU? Buy by software number.
The stock or modified file exactly as we hold it, to write with your tool. Make sure your ECU carries 55595656 55576791 55500370 55489650 5550 and the same hardware number.
See files & prices →

Vehicle pages: Holden Colorado · Holden Trailblaser · Holden Trailblazer · Holden colorado · Holden trailblazer · Holden trailblazser

Files are supplied for off-road / motorsport use; checksums are corrected by your flashing tool on write. Last project update 2026-09-30.

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