Replace it with a new one.
Heater core removal and installation:
Disconnect the battery cables. (Negative cable first, then the positive one.)
You will need to raise the front of the vehicle and support it securely on jackstands. Apply the parking brake and block the rear wheels to keep the vehicle from rolling off the jackstands.
Drain the cooling system.
Remove drain hose from the bottom of the heater case.
Working in the engine compartment, disconnect the heater hoses at the firewall.
Remove the right and left sound insulators and steering column trim cover.
Disassemble the dash as necessary for access. Remove the heater outlet duct and glove box.
Remove the heater core cover. Pull straight back to avoid breaking the drain tube.
Remove the heater core clamps and remove the heater core.
Installation is the reverse of removal.
cost to replace heater core 1994 corsica
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.
A Haynes or chiltons manual has the how to. Or do a search for a forum for Chevy corsica specific
your heater core is leaking
Its located in the center of the vehicle below the dash.................
inside dashboard on passenger side
Under dash, near firewall, passenger side.
Heater box drain It is just below the heater hose conections, If the heater core leaks it drains the coolant outside to keep the carpet dry.
Leak in heater core
I was just browsing online for Chevy Corsica heater core and found they were being sold for $53 at 1aauto.com plus free shipping. It looks like a decent deal to me and the suppliers seem pretty competent in the aftermarket auto parts business. You can check out their website for more details.
How do i cange the heater core of a Chevy s 10How do i cange the heater core of a Chevy s 10
Heater core is leaking. Air Conditioner drain hose is plugged.