Thread: got my spare ECM flashed
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Old 10-23-2009, 08:20 AM   #12
2010 2-Tone


 
Drives: 2010 RY 2SS with Custom Stripes
Join Date: Mar 2009
Location: Jennings, La.
Posts: 2,220
Quote:
Originally Posted by ssmike View Post
How did you get a spare ECM and how much did it cost? Can GM detect that you change the ECM?
They will be able to tell! The mileage won't match!
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