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Behind the firewall, near the center of the engine compartment.
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 a heater hose on a 2001 Oldsmobile silloute
how do you replace a heater core in a 91 Oldsmobile 98
how do you get to it
If the AC is Blowing cold and turn off and on, the AC/heater control switch is bad. Replace it on eBay for around fifty dollars. Work great now.
The resitors or contacts to the resistors have quit. Start at the switch, check continuity/resistance on the input and output for each speed.
The heater core may be stopped up. Try flushing it, or replace it.
there a switch on your heater control panel.be more specific to get a proper answer
You can find the 1993 Oldsmobile Cutlass block heater on the right hand side of the engine block. You can follow the block heater cord directly to the block heater.
behind glove box near stereo
How do you change the heater core on a 1989 Oldsmobile Cutlass Ciera? or where can I get the Info on replaceing it