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Chevrolet
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2006
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TrailBlazer 4.2 S, 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 - 4.2L - DTC P2101 To P2444
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DTC P2138
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Conditions for Setting the DTC
Conditions for Setting the DTC
The voltage difference between APP sensor 1 and APP sensor 2 exceeds a predetermined value.
The above condition is met for more than 2 seconds.