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Code P1682 for a 2006 Chevrolet Trailblazer indicates a problem with the ignition switch-related circuits. Specifically, it suggests an issue with the ignition switch signal not being detected by the engine control module (ECM). This could result from a faulty ignition switch, damaged wiring, or poor connections. It's important to diagnose the specific cause to ensure proper vehicle operation.

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5mo ago

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