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.
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i am tryin to do the same thing on a 98 gsr
Remove the water supply hoses to your 1998 Chevy Lumina heater core. Remove the heater core retaining bolts. Reverse the procedure to install the new heater core.
There was no rwd Cadillac Fleetwood in '98
Take it to a mechanic.
Under the dash
go to autozone.com. and click on the heater core part for your sonoma. then there should be an install manual button u click on on the page. i have a 98 gmc wit a heater core out also. i think the 97 models you just have to take off the dash.
To change the heater core in a 1998 Cadillac Eldorado, start by disconnecting the battery and draining the coolant. Remove the dashboard and the center console to access the heater core, which is located behind the firewall. Disconnect the hoses attached to the heater core, remove any retaining screws or clips, and carefully extract the old core. Install the new heater core by reversing the disassembly steps, ensuring all connections are secure, then refill the coolant and reconnect the battery.
The most common signs of a bad heater core are; no heat or fluid leaking into the passenger compartment. The heater core can have a leak or it can be plugged.