Will changing stereo in my 2003 trailblazer hurt my car computer or onstar?

  • Thread starter Thread starter Robert M
  • Start date Start date
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Robert M

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I recently installed a pioneer stereo in my 2003 chevy trailblazer. Now the ABS and brake light stay on. Also a couple of times my car would not start. This has never happened before. I had to cut and splice the speaker wires as the plugs did not match the original two plugs(white and black) I left taped over and stuck away in the dash. Were they needed for my car to work properly. I only installed a stereo. I hope I did not hurt the car computer.
 
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