Having problems with your 1994 Buick Park Avenue ?
With AC on only the driver receives cool air. The passenger side receives hot air from the dashboard vents. The car was spent the summer stored in the Arizona heat. When started the headlights would not turn off, the windows would not go down and the AC/heat problem. After 15 minutes or so the headlights worked properly as did the windows. I bought a new battery just because it was time (6 years) for a new one. Still have the problem.
There's a possibility that the AC vents are jammed. Try to expose the system behind the dashboard and if nothing else works try to loose them by hand. Then lubricate the moving parts and also your mate could enjoy the cool.
Repair Help & Product Troubleshooting for 1994 Buick Park Avenue
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