You don't. Instead, just bypass the heater core or use Bar's Leaks.
behind the dash....
you have to remove the dash, get a Haynes manual Chilton's may be better rent from library) follow the remove dash instructions, heater core is slightly to the left of the glove box. remove heater core cover, remove hoses from heater core (engine compartment) pull out old core. pia job.
Replace the heater core. It is leaking.
My heater core went out in my 95 Thunderbird about 3 months ago. Unless you know a ton about cars, you're gonna have to take it to a mechanic. It will be anywhere from $400-$800 to get it put in. Sucks since it's a 20 dollar part. But you gotta do what you gotta do.
yes. it is located behind the dash
Bad news... Entire dash must be removed. My 1995 Thunderbird heater core failed in ealy December. Bypassed it. Dealer wants $800 for labor only.
you might be able to just go through the back of the glovebox to get to the heater core
To replace the heater core on a 1997 Ford Thunderbird, start by disconnecting the negative battery cable and draining the coolant from the radiator. Remove the dashboard and the center console to access the heater core housing. Disconnect the heater hoses, unbolt the heater core from its housing, and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.
change out the heater core
how to change heater core in 98 suburban
it shouldn't
Heater Core