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Home >> Chevrolet >> 2003 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline >> Diagnostic Tests >> DTC P1258: Engine Over-Temperature Condition >> Conditions For Setting DTC

Conditions For Setting DTC

The engine coolant temperature is above 270°F (132°C) for 10 seconds or more.

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