Is there any difference in replacing the heater core in the 2002 as opposed to an earlier model such as the 1997 ?...or is it pretty much the same job ?
You probably have a leaking heater core.
heater core hoses not hot
You have done something to the mix door. It should shut off air to the heater core when the AC is on. It is located right near the core and you may have bent it or just disconnected it by mistake.
There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system.
Buy a motor manual for your truck at your local auto parts store. It will have one in it.
There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system. There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system.
chilton shop manuel for your model pickup will show all you need to know
Copper Tubing works very well with rubber connections just @ the motor & heater core.
No
Go to hospital take he/she to the hosipitstal
Try flushing the coolant system out
what is the year model? 1995