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GMC
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2002
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Jimmy 2D Utility, Part Time, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls Self-Diagnostics - 4.3L
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Diagnostic Tests
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DTC P1258: Engine OVERTEMPERATURE
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Conditions For Setting DTC
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Conditions For Setting DTC
The engine coolant temperature is above 270°F (132°C).
The condition is present for more than 10 seconds.