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Chevrolet
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2002
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TrailBlazer 4WD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System - Self-Diagnostics - 4.2L
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Diagnostic Tests
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DTC P0130: Closed Loop Rationality
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Conditions For Setting The DTC
Conditions For Setting The DTC
The engine is in Open Loop for 7.5 seconds out of 12.5 seconds.