dropping of temperature gauge while driving?


Asked by Mar 21, 2016 at 04:29 AM about the 2008 Chevrolet TrailBlazer

Question type: Maintenance & Repair

I am facing problem of dropping of temperature gauge while driving. It comes automatically after some hours during driving. Moreover, once temperature needle goes down to zero during driving, Airconditioning COOLING system also stops working during that period. then it come back to normal ....Please help me

2 Answers


The AC only starts to work at a certain temperature. Have you gone out and checked the radiator and heater hoses to see if they are hot while this is happening? It may be the thermostat needing to be replaced, and maybe the temperature sending unit might be bad.


thank you, i don't think it is problem of thermostat.... because everything will come to normal when removing battery wire and return back!!!!

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