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Pontiac
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2006
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Grand Prix Base
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - 3.8L - DTC P0446 To P2108
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DTC P0641 or P0651
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DTC Descriptors
DTC Descriptors
DTC P0641
5-Volt Reference 1 Circuit
DTC P0651
5-Volt Reference 2 Circuit