Would like to know where cabin air filter is located?

Question edited for clarity and typos.
Question moved to model category.

You just need to identify the part and replace it. Check the diagram on the top left. If it is part 7 it is discontinued, so you would have to remove it and have it MIG welded.

https://www.gmpartsclub.com/v-2002-oldsmobile-intrigue--gls--3-5l-v6-gas/cooling-system--radiator-and-components

https://www.google.com/search?q=2000+oldsmobile+intrigue+coolant+parts+diagram

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Check fuse that operates heat & a/c. Bring to service station for repair.

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it is located under the air filter housing on the front driver-side of the car, under the hood

hello. here is a link to give you all of the information you need about this model's filters http://www.automotix.net/autorepair/diy/1999-oldsmobile-intrigue-procedure_ac.html

J.

If it's a 3.5l, high side is near the air cleaner, low side is at the firewall. Econo means compressor is OFF when light is ON (backwards). A low charge will cause hot air on left and cold air on right vents.

Yes. Under the cowl (the plastic piece under the wipers, between the engine and the windshield), there is a cabin air filter and deflector. If this is missing, water could enter your fan, and when it dries out, it works again. Check for water on the floorboard on the passenger's side.

P0101 pertains to the Mass Air flow circuit out of range. Check for air leaks at the air inlet hose

The oil filter is in the oil pan.You need a special tool for removing the filter cap.You should be able to get one at any part store.Good luck.

if you have the filter missing you a/c evaporTOR MIGHT GET DURT AND decrease the air flow, but the cooling should be ok
is it blowing hot air? or the air flow is low?

it should be under the plastic windshield cowl on the passenger side