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Chevrolet
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2003
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TrailBlazer 5.3 P, RWD
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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 - 5.3L
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Diagnostic Tests
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DTC P0120: TP Sensor Circuit
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Conditions For Running DTC
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Conditions For Running DTC
DTCs P1518 or P2108 are not set.
The ignition switch is in the crank or run position.
The ignition voltage is more than 5.23 volts.