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Rawze

(05-29-2026 )Ripon_guy Wrote: ...
2. Sent the ECM to Peterbilt to have it bench-updated and rewritten to match my Peterbilt’s VIN and specs. No change.
...

my first thoughts...
it could still be in the ecm. - Many stealers$hits will use the default options in Insite (re-use the existing data in the ecm) when re-flashing the software instead of manually cancelling it and pulling from their database like they should.

I.E.> You should have completely blanked out the ecm or flashed it with the blank versions of the correct program according to enigne ser#, and NOT saved/restored any data/template/work orders ... then send it to them to recover the vehicle data into it on that vin#.

that, or purchased an official replacement ecm from the stealers$it and had them pre-flash it with engine software and vehicle-specific settings, etc. before accepting it.

and yeah, those switches and addresses for buttons, etc. change year to year and model to model on those petes.

Personally, I would not have purchased the truck unless you had the extra moneys to inframe it. Who knows what kind of bad things may have happened to it if it had a bad delete or something in that ecm they took off it.