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Why does the panel engine coolant temp. gage goes out on my 2008 HHR Chevrolet?

(2008 Chevrolet HHR)
in Houston, TX on September 16, 2011
I wake up this morning at 5:00 ready to take my sister in law to the hospital and the car was not marking the temp. of the car them I when to another place and now the check engine light came on? I went to take the car to a machin around my house and he change the coolant sencer.But it was still not working he went back to auto zone and bought another one and again it was not working. So now he told me it is the gage panels of the whole car. I just want to know how much it is going to cost me?
Displaying 3 answers & 0 comments
Popular Answer
on November 19, 2012
There are great threads on this at - Patrick is right but in simpler terms it is either the sensor or the thermostat being stuck open. P0128 is the code that shows when the sensor is shot. Known issue. It's doing it on mine too. :)
of Greg Solow's Engine Room on September 16, 2011
I guess first it needs to be properly diagnoised, using a proffesional grade scan tool I would look and see if the computer is reading the input from the coolant temperature sensor, the information can be read right off the scan tool if the scan tool says zero the input side of the computer is bad.. Next the circuit to the gauge needs to be checked. For test procedures there is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate
Removal of the instrument cluster takes about .6 hour labor add time for diagnostics.
on July 14, 2014
I just changed the thermostat on a 2008 hhr and fixed this problem but there is an info button on the steering wheel just push it until it displays coolant temp it should be between 180 and 200 degrees when car is fully warm at operating temperature mine was at 135 before i fixed it now it reads 192 and light stays off after i erased codes with scanner
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