My 1998 park avenue passenger doors wont open

SOURCE: 1998 buick park avenue drivers side blows cold, passenger side hot

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.

SOURCE: where is the fuse panel on a 1998 park avenue ultra?

I just accessed mine. It is under the rear seat. You just lift up on the seat, and it pops right out. If you are having problems with the rear defroster, it could very likely be the control module. This is a combination module which the rear antenna, and the defroster grid plugs in to.
When mine went out I smelled a "burnt wire" smell, then it went out.
To access the module, sit in the back seat, drivers side. There is a trim panel that will be by your left ear as you are looking forward. It is the panel that flares down from the ceiling to the rear deck. Gently pull at the edge of this panel, working around the edges, and the small strip which continues over the top of the door.
The seatbelt goes through this panel, so it will be hanging from the seatbelt at this point. There is a ~3" square, black module with the defroster input and output wires, and the antenna wire plugged into it.
You just unplug the wires, pull the one mounting screw, and voila!
On mine the module was obviously melted, as was the wire going into it. I got the replacement from a salvage yard, as the new one was over $50, and the replacement wire was $18. The salvage yard was unable to look it up, so I had to go out to the yard with them and pull it myself. The final cost was $17 (they tried to charge me $40, and I told them I could get it online for that, and they dropped the price).
You can use a crimp on **** connector to put in the replacement wire, but because of the heat in that area I chose to solder the wires together.
BTW, this module fits a wide range of Buicks, and full size Olds.
Hope this helps.

Marvin

• 85242 Answers
• Posted on Apr 13, 2009

SOURCE: my 1997 buick park avenue

U need to replace the air temperature control blend door actuator motor, this requires removing the dash to access the motor for the blend door.

Donnie Matney

• 426 Answers
• Posted on Jun 19, 2009

SOURCE: 1998 Buick Park Avenue Ultra, AC was low on

still low on charge usually problem.

SOURCE: How do I remove the rear door panel on my Buick Park avenue

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. If needed, you can pull back the weather seal (can't reuse it, but it's not that important) and you will be able to access everything inside the door