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HI EVERYBODY

I'm working on my car GMC sierra 2008 I would like to read the tune file but unfortunately, the previous owner tuned the vehicle and put a lock on it. How to remove the pass key ? or...

Thank you for your response,, but every time ecm reads 158mph .. diagnosing the issue from can bus but still the same

Hi

I have some issues in my GMC Sierra 2008 5.3 engine has an issue with 158 MPH in idle. Moreover, just reflashed ECM, TCM with the latest calibration of the gm factory.

89210


if there...