No heat in truck

Asked by Dec 20, 2015 at 03:22 AM about the 1993 Chevrolet C/K 1500 Cheyenne Extended Cab LB

Question type: Maintenance & Repair

Heat was working in the truck then it stopped I have
replaced the heater core and flushed the system water will
make the hose that enters the heater core hot but it does
not go to the hose that exits the heater core I can squeeze
the one that goes in and it will push water three the out
hose so there is no clog but Ithe won't go by its self and the
water pump is working fine and no leaking hoses.

2 Answers

111,785

Is the thermostat opening?

1 of 1 people found this helpful.
75,545

It sounds like you need to purge the air out of the cooling system. Do it by leaving the radiator cap off while warming up to operating temperature, the coolant may overflow the radiator but that is the air working out of the system. When the thermostat opens the coolant level will drop in the radiator, at this point keep filling it as necessary until full. Like joemom says, make sure the thermostat is working properly.

1 of 1 people found this helpful.

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