Probably on the engine end of the upper radiator hose Probably on the engine end of the upper radiator hose
See below link
Located rear of vehicle under car.
15 W 50 is the best for the 05 model
Saturn is the make, ion is the model.
Saturn Ion was created in 2003.
2006 Saturn ION
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location of the thermostat in 2002 Saturn sl sedan
The Saturn Ion was never flex fuel capable when it was being manufactured. The Saturn Ion is no longer being manufactured.
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