99 blazer heating problems
I have a 99 blazer that the heat isn't getting hot enough. i have the temp set to max 82, fan max and push the button to circulate in the vehicle. Still it is just enough to take chill off. I have noticed that when i go up hills that the cool air will come out of the vents and then warm air will start to come out when i go down the hill. My husband has flushed the heater core 3 times, he also flushed the radiator,replaced thermostat and water pump. also when i have the control on the feet the air comes out of the defrost. i know there is something wrong with my heat but hubby can't figure it out. I smell anitfreeze in the vehicle, i was told that my intake manifold gasket is bad and asked hubby if that could cause problem with heat but answer was no. so i am asking you guys for some help. I also think there is a problem with the dial controls on the dash.
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