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Updated information on the overheat issues
Thermostat must be a 180°; letting the ECT reach 210
and commanding high fan I get hot air flow through the
cooling fins of the radiator until the ECT reaches about
180. This with the engine idling. 
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| Engine | 3.4 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 Pontiac Grand Am SE 3.4L
| Engine | 3.4 L |
| Trans | 4-speed Automatic (Electronic) |
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