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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.
Here is a website that helped my change the heater core on my 94 bravada on around 12/15/05: http://www.sytyarchives.com/howto/viewarticle.php?article_name=heater_core.php&dir=climate_controls
Ruptured heater core.
You cannot fix or repair a heater core you must replace the complete unit with a new one...........
You'll have to buy a service manual from the parts store. It'll show you each step and give you other good information. I just changed my heater core in my 94 Grand Am Quad 4 and it was a pain. Good Luck.
Disconnect them from heater core and with a coupling and 2 hose clamps tie them together
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.
all i can tell you is that if you got that model that comes out thru the inside of the car"YOU GOT TO TAKE OFF THE WHOLE DASHBOARD" and the bad heater core come out thru the glove box. but if you got the kind that i had (94 cartier) it came out under the hood,so a tech would have to let you know depending on what size the heater core is.
Take off glovebox, undo computer by taking plugs out, pull out, take old freon out and put new in.