1999 park avenue airconditioner cold on passenger side, just cool

blend door or mode selector door not opening fully.

The mode door is stuck for passenger control.

Could be a problem with the control or a blend door.
A mechanic would check the blend doors under the dash for movement.

THE SWITCH FOR DRIVERS SIDE CLIMATE CONTROL IS BAD

check under your hood they may be a loose air hose by the firewall..

Sounds like multiple problem's. The a/c sound's like low on freon.The air bag and ses light are seperate systems from the a/c.Any time the service engine light is on it has to do with the engine system,the air bag is also seperate.Need to take in and have the code's checked for the service light and they can also check the air bag system and see what codes are stored and go from there.

The actuator motor is bad and needs to be replaced for the right side.

I have a 99 Park Avenue and I had the same problem. The freon level was low.
Hope this helps.

Check the operation of the drivers blend door actuator. Sounds like its stuck or broken. Does the temp display on the dash flash?

sounds like the drivers temp door actuator is not working should be located on the drivers side of the air box down by the gas pedal or center dash area