unscrew the plastics piece under the glove box right above where your feet would be and the heater coil is in there. you will have to disconnect the hoses from under the hood right in front of the passenger side. there are only 2 hoses connected to it. then just put in a new heater coil and reattach the hoses and screw it back up. all done.
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 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.
Please look below in the related links section for a detailed how-to.
how to change heater core in 98 suburban
change out the heater core
Try the repair tips on the Autozone web site.