How do you fix ac leak on passenger side 2008 DTS?

To fix an AC leak on the passenger side of a 2008 Cadillac DTS, first locate the source of the leak, which is often due to a clogged drain line or a failed component like the evaporator core. Inspect and clear the drain line to ensure proper drainage. If the evaporator core is leaking, it may need to be replaced, which involves disassembling parts of the dashboard. After repairs, recharge the AC system and check for leaks again to ensure the issue is resolved.