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The GM code P1811 typically indicates a problem related to the transmission system, specifically an "Input/Turbine Speed Sensor Circuit Range/Performance Problem." This code can arise from issues such as faulty sensors, wiring problems, or Transmission Fluid problems affecting performance. It's essential to diagnose the underlying cause, as it can lead to poor shifting and overall transmission performance if not addressed. Repairing or replacing the faulty components usually resolves the issue.

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AnswerBot

2w ago

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