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Pontiac
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2005
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Grand Prix GTP
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Repair and Diagnosis
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Accessories & Equipment
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Gauges & Instrument Panels
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Instrument Panel System Displays, Gauges And Console
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Diagnostic Information and Procedures
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DTC B3621
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Action Taken When the DTC Sets
Action Taken When the DTC Sets
The HUD ignores the malfunctioning switch circuit.