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GMC Truck
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2011
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Sierra 3500 4WD V8-6.0L
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Repair and Diagnosis
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Specifications
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Pressure, Vacuum and Temperature Specifications
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Thermostat, Engine Cooling
Thermostat, Engine Cooling
The thermostat should begin to open at
87°C (188°F)
The thermostat should be fully open at
97°C (206°F)