air on the left side not always cold
That page may help. It explains how the servo motor works in ducting. This is if you mean one side IS cold, not an A/C problem not getting cold at all. click for full screen and see the site above.
Looking for a Used Sienna in your area?
CarGurus has 20,534 nationwide Sienna listings starting at $1,695.
Search Toyota Sienna Questions
Toyota Sienna Experts
Related Models For Sale
Used Cars For Sale