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Pontiac
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2004
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GTO V8-5.7L VIN G
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Thermostat
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Specifications
Thermostat: Specifications
The thermostat valve opening temperature is within
80°- 84°C (176°-183°F)
The valve lift is
8 mm (0.31 inch)
or more at
95°C (203°F)
.
If the above specifications are not met, replace the thermostat.