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Discussion Starter · #1 ·
Our 2015 Chevy Trax AWD LTZ (50K miles) had both engine light and overheat light flashing and buzzer going off. Mechanic replaced coolant tank and cap and added coolant (code said vacuum issue)...still overheating...then replaced thermostat. The car still reaches overheat after running a while. Head gaskets and seals were tested and test ok. Now performing a flow test on the water pump. If not that then perhaps a clogged radiator$$$$$. Has anyone faced this issue and if so what was your remedy or what do you suggest the problem may be???
 

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Are you sure temperature sensor is good. It may read high and not really reaching overheat. Or maybe you have an airlock. Are you getting any heat from the HVAC?
 

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Discussion Starter · #3 ·
Sensor is good.
What do you mean when you refer to airlock?
An air void in the coolant system? If so how do you remedy that?
 

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On these not sure but I believe you take the cap off the reservoir and let it idle until it burps. You will need to monitor temperature but usually the fan will start before overheating, if your fans work. You should see bubbles coming back to the reservoir and the level going down.
 
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Our 2015 Chevy Trax AWD LTZ (50K miles) had both engine light and overheat light flashing and buzzer going off. Mechanic replaced coolant tank and cap and added coolant (code said vacuum issue)...still overheating...then replaced thermostat. The car still reaches overheat after running a while. Head gaskets and seals were tested and test ok. Now performing a flow test on the water pump. If not that then perhaps a clogged radiator$$$$$. Has anyone faced this issue and if so what was your remedy or what do you suggest the problem may be???
 

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Discussion Starter · #7 ·
What did you end up doing to correct overheating. My 2016 Chevy trax is doing the same thing. Only 36000 miles
Replaced thermo stat, no help!
Replaced overflow valve and cap, no help!
Replaced water pump.....fixed!
Apparently the computer diagnostics can only monitor electronic components not mechanical components like a water pump.
 

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Replaced thermo stat, no help!
Replaced overflow valve and cap, no help!
Replaced water pump.....fixed!
Apparently the computer diagnostics can only monitor electronic components not mechanical components like a water pump.
I have a 2014 Trax, have replaced the radiator, water pump, caps and hoses. Now at 151,000 kms engine light on and reservoir is looking low. Arg!
 
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