Coolant temp gauge only comes on now and then. Is this a bad sensor? on 2007 Chevrolet HHR

does this need cleaned? The a/c does not work if the coolant temp gauge is not working.

by in Alamogordo, NM on April 07, 2013
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2 answers 1 comment
ANSWER by , October 11, 2014
I had the same problem. I replaced the thermostat and that fixed the problem. The new thermostat will remain open when they mess up. Mine also said coolant temp low. Hope this helps.
ANSWER by , April 07, 2013
sounds like a bad sensor to me ,have it scan tested to get the right temp reading
COMMENT by , April 07, 2013
Thx Goodguy, Where is the sensor located?