Tahoe_man89

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Question Asked: Truck has no heat while driving down the road ... why?
January 09, 2014, 07:56 PM
I just picked up this truck and has no heat I changed radiator cap and thermostat but did nothing has heat at idle but loses it as you drive down the road was told it could be a number of things like heater core... water pump.. bad head gasket... well I eliminated the head gasket so far the system pressure checks good but I have no heat... the passenger side vents don't work when the heat is on but if I turn the ac on they vents work.. but there is a lot of air blowing around the blower motor area.. please help
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