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GMC
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2003
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Sierra 2500 HD, 4D Pickup Extra Cab, 6.6 1, RWD, Standard
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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 - 6.6L
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Drive Cycles
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Inspection/Maintenance Complete System Set Procedure
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Conditions for Running
Conditions for Running
Cold Start
The Engine Coolant Temperature (ECT) is less than 133°F (56°C).
The Intake Air Temperature (IAT) is more than 20°F (7°C).
The transmission fluid temperature is between 68-266°F (20-130°C).