cost to replace heater core 1994 corsica
A Haynes or chiltons manual has the how to. Or do a search for a forum for Chevy corsica specific
Drain the water from your 1990 Chevy Corsica cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
your heater core is leaking
Its located in the center of the vehicle below the dash.................
inside dashboard on passenger side
Assuming the blower is working, the reason for no heat could be, low on coolant due to leak in coolant system, thermostat stuck open, heater core plugged or temperature blend control NG.
Under dash, near firewall, passenger side.
Replace your heater selector switch
Low coolant? Bad thermostat? Heater core airbound, plugged or restricted? Water pump not circulating coolant?
Thermostat housing on 94 will be on top of the engine right side between air filter and oil cap, not oil dipstick
It could be a blocked heater core if your fan works... Or it could be your thermostat... I have an 03 that is doing the same thing. I just replaced the thermostat and it is still doing it. There is a site called BlazerForum.com you may get some better answers there