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GMC
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2009
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Envoy 5.3 M, 4WD
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Repair and Diagnosis
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Engine Performance
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Data Communication System
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Diagnostic Information and Procedures
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DTC B1000
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Circuit/System Verification
Circuit/System Verification
Verify that DTC B1000 is not set.
If the DTC is set, perform the setup procedure on the control module. If the DTC resets replace the control module.