Where is the obd reader switch on a 2003 trailblazer?

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1112150

2026-03-02 12:50

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On a 2003 Chevrolet Trailblazer, the OBD (On-Board Diagnostics) reader port is located beneath the dashboard on the driver's side. It is typically found near the steering column, just above the brake pedal. You may need to remove a cover or panel to access the port.

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