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  1. CTS First Generation Forum - 2003 - 2007
    Anyone run into a code showing on the built in code reader (2003 Only) but not any other OBD-II scanner/reader? I've tried 3 standalone readers (apparently I collect them) and all are missing a code. The same code... P0504h - Brake Switch A/B Correlation My brake lights do work properly but...
  2. 2004-2007 CTS-V General Discussion
    Hi Guys, I had throttle problem , It was shaking and turning off so I decided to hook elm327 and Checked codes and there was no pending codes or permanent codes. So I decided to check youtube and came to this app on Google Play "Throttle Reset OBD2", at first I thought it was fake but after...