I forget the exact procedure since its been awhile but they are simple to get at. You need to remove the glove box and kick panal under it.

Sand and dirt gets into the motor and after 20 years ruins it, thats why the newer cars have cabin air filters. Like I said before you can try to clean and lube it up, that will buy you a little time.

Its just for your climate control, if it fails you won't get air into the cabin. Open your windows I guess if you don't want to fix it.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200