Where is the heat & a/c blower fan located? Getting very noisy 95 Skylark LE

What is your question?

Where is the heat & a/c blower fan located? Getting very noisy in the 1995 Buick Skylark LE. Is it under the dash on the passenger side or is it in the engine compartment at the firewall on the passenger side? Thanks in advance

What makes this problem better or worse?

Getting louder

How long has your 1995 Buick Skylark had this problem?

Weeks