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

Question

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.

conejote_99 · Accepted Answer

yes you are about to damage the BCM  and repairs are going to be expensive 
remove the battery terminal and install the factory radio and fix all the wires back to factory 
drive it for a day or two 
you are going to replace the radio again but this time you need the correct harness to do  the installation follow this link 

http://www.oemautosound.com/pc-218-132-pac-c2r-gm24.aspx

good luck

Anonymous · Answer

2003 Trailblazer Radio

Travis H · Answer

Whenever installing aftermarket radios you should use wiring adaptors made for your spefic vehicle application.When installed correctly you want have prohttp://www.crutchfield.com/g_751/Factory-System-Adapters.html?tp=3486blems with install.

Anonymous · Answer

Just loud enough for me.. No need in blasting other cars..

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

4 Answers