Mike's Workshop Manuals
: Service manuals for every vehicle
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Pontiac
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2009
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G8 Base
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Repair and Diagnosis
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Brakes
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Traction Control
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Antilock Brake System
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Diagnostic Information and Procedures
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DTC P0856
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Circuit/System Verification
Circuit/System Verification
Verify that no DTCs are set in the ECM.
If DTCs are set, refer to
Diagnostic Trouble Code (DTC) List - Vehicle
.