got 2003 grand am got no heat last nite she ran hot and no heat toped it up this morning went out still no heat but temp is normal
2 Answers
beatupchevy answered 5 years ago
you should check the coolant to see if it's clean and properly mixed , see if both hoses for the heater core are hot from the engine bay , Do you hear a vent door open/ close when you make a selection ? Cleaning the contacts on the selector switch may help . these may be like my 02 buick , a chinese puzzle to access things , U toob has many videos on a variety of repairs
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the 2 hoses from motor to heater core are cold the only hose that is hot is the one from rad to thermostat