AC Blowing cold on one side

Gen 1 here:

My air conditioning is blowing cold on my passenger side, and blowing hot on driver. Compressor clutch is fine, everything looks good from what I can tell. My initial suspicion was a coolant leak, but I feel like that wouldn't explain it fully because it still blows very cold air on passenger side. I saw on Facebook a thread stating that it could be Heat blend actuator, but that was for Gen2. I could not find any documentation online on replacing this relating to Gen1, or if it would even be the actual issue. What steps can I take to fix this? Any insight is appreciated.

 

If it's only one side then you have a problem with the blend door

 

Where can I find that? I know the Gen2 location is behind the glove box and to the upper left, in a white gated plastic, but I couldn't find the location for gen1.

 

No idea. I think the shop manuals are on here for metal members but someone else would need to confirm

 

Can confirm they're posted in the metal member section