I don't know, because I'm trying to figure out the same thing...
Before CHanging the Heater Core, have you tried flushing it? I have a 99' Jimmy and have to do this every year to get my heater to work.
Drain the water from your 1998 Chevy Astro cooling system. Remove the water supply hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
take out the glove box
You will need to remove the water supply hoses from your 1998 Oldsmobile Intrigue heater core. Remove the heater core retaining bolts. Reverse the process to install your new heater core.
How to replace heater core in a 97 Lincoln Town Car
most of the time it the heater control unit on the motor not the heater core had same problem
How do you replace a heater core in a 1998 Ford Expedition?"
How do you replace a heater core in a 1998 ford expedition?"
You don't From, Gabe Higbee
drain coolant, disconect heater hose's, remove glove box, remove heater core cover, remove heater core. reverse order to reinstall.
hellow just wonderin if you guys know where would be the heater core on my 2003 Lincoln navigator
change out the heater core