You cannot fix or repair a heater core you must replace the complete unit with a new one...........
Ruptured heater core.
buy a new car
Drain the water from your 1994 Chevrolet Cavalier cooling system. Remove the water supply hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install your new heater core.
Disconnect them from heater core and with a coupling and 2 hose clamps tie them together
We need to know what is wrong with the heater before it can be fixed.
I think they are just called heater hoses.
your heater core is bad
Above the right front passingers feet.
Disconnect the heater lines going into the fire wall from under the hood. Remove the panels from under the dash. At this point you should be able to remove the heater cover and remove the heater core.
I would like to have a dimgram to show me how to put the hater core out and in on my 94 Pontiac Bonneville
Lift up the vehicle and support it with jack stands and remove the two heater hose near the firewall. The heater core is in the center inside the vehicle and once you have removed the left and right covers you then need to remove the lower panel that the heater core is in and remember to pull the core back straight..........
The classic symptoms of a leaking heater core. Replacing the heater core requires removing the complete dash assembly.