heat

This is an interesting one. I, along with many others, am having trouble with the heat in my Torrent. At all engine speeds, I get heat if the fan speed is 50% or less. From 50% to 100% the heat starts to blow cool, regardless of RPM (assuming the engine is fully warmed up). I've had many...

NOTE: I actually don't own a Grand Prix - a friend of mine who doesn't use a computer has one and asked me to post a message for them to help them troubleshoot a problem they're having. So any replies might take longer than usual since I only see them a couple of times a week. -- I'm trying...

So I have changed thermostat both lower and upper radiator hoses are hot as well as both heater core hoses. Changed blower resistor and blend door motor. But I still have no heat in the car. Any suggestions?:mad: