09 aveo temp gauge issue

Asked by Jan 14, 2017 at 08:29 PM about the 2009 Chevrolet Aveo LS

Question type: Maintenance & Repair

I have a chevy aveo 2009. While idling the temp
gauge goes up like normal and starts blowing
warm air. When I start driving the gauge goes
down and starts blowing cooler and cooler air.
After about 10 min at max it is all the way back
down to the cold line. 5 manual transmission if
that makes a difference. Coolant is good and
clear tested at -30.

2 Answers


Sounds like the thermostat needs to be replaced. Bad thermostat.

1 of 1 people found this helpful.

Yup, sounds like the thermostat is stuck open. HTH. -Jim

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