Check Engine Light on/OBDII reads coolant thermostat

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11-03-2015, 05:03 PM

AlexRose

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Join Date: Sep 2015

Location: Mentor, Ohio

Posts: 39

Check Engine Light on/OBDII reads coolant thermostat

Check engine light came on, on the freeway, need to replace thermostat. Do I absolutely need to drain my coolant to replace it?

11-03-2015, 05:54 PM

The_Maniac

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Join Date: Apr 2010

Location: Mentor, Ohio

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3800? If it's a 3800, you can change it with a little coolant loss. No big deal.

3400, it pretty much dumps a ton of coolant out.

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