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Chevrolet
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2003
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Silverado 1500 HD, 4WD
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline
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Diagnostic Tests
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DTC P0120: TP Sensor Circuit
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Conditions For Running DTC
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.