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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 Setting DTC
Conditions For Setting DTC
The TP sensor 1 signal voltage is less than 0.37 volt or more than 4.51 volts.
The above condition is present for more than 1 second.