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I think the root cause of a lot of these problems is the extremely high temperatures the Cruze runs. Those members who have replace the electronic thermostats or gotten tunes that reduce the temperature to more normal ranges have reported no further issues with their coolant systems as well as no apparent impact on emissions or fuel efficiency.
Thanks for your response. I didn't know there where tunes for that and what do you mean "replaced the electronic thermostat"?
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