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Cadillac
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2005
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CTS Base, 3.6 7, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - 3.6L (DTC P167A To P2190)
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Engine Controls Diagnosis
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DTC P2187 or P2189
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DTC Descriptors
DTC Descriptors
This diagnostic procedure supports the following DTCs:
DTC P2187 Fuel Trim System Lean at Idle Bank 1
DTC P2189 Fuel Trim System Lean at Idle Bank 2