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OnStar Wiring?

Discussion in 'Audio, Video & Gadget Tech' started by .::chevybaby05::., Aug 30, 2008.

  1. i heard that certain newer model GM trucks were coming with OnStar wiring even if OnStar wasn't installed and that people were having problems installing aftermarket head units because of this... anyone hear something similar? my friend said he had a huge problem with his wife's trailblazer because of it... if so anyone know what years and makes this is effecting?

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