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You did not say what year and this is critical.

Does your key have a little chip in the metal part of the key? It is most likely the wiring between the ignition and the control box is faulty. I built a wiring harness and wired my spare key in right beside the box to bypass the wiring fault. Worked good.

You need a manual with wiring diagrams and security box location for your particular car. GM moved them year to year and model to model to help keep these cars hard to steal.

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11y ago

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