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Need to get one of those devices to pressurize the coolant system when cold. Then closely inspect to determine leak location. Several years ago, I had this happen on a ford. Stupidly, I convinced my self it was the head gasket. After replacing, still leaking coolant! I was mortified...

Hi, New to forum and to Chevrolet. I recently purchased a 2007 Chevy Equinox LT with the 3.4 liter engine. Twice, while running the heater, I noticed that the temperature gauge was pegged cold, that the Driver Information Center was displaying "Engine Hot A/C OFF" and that both cooling fans...