1997 Buick park avenue what holds the power seat control to the seat ?

SOURCE: 1997 Buick Park Avenue

This is the diagram but you should have factory belt diagram sticker is still somewhere under the hood
If not:
http://www.mvreader.com/multiview/dayco/zoom.php?zoom_item=C0001D&l=n&catalog=auto&category=
To replace the serpentine belt on a V6 3800 you must jack up the motor and remove a motor mount. You must then use a breaker bar with a socket (13/64") and pull it toward the front of the car to release the belt tensioner. Put the new belt on, tighten it, put the mount back on, and lower the jack.
Driving without a belt can cause the motor to overheat, will cut power steering, and will not recharge the battery, so you should probably get a tow
Good Luck

SOURCE: buick park avenue 1997 leaking need to replace

Ussualy a pain,but some radiator shops will replace it cheaper than most machanic shops.

SOURCE: repair seat belt latch - stuck- 1998 buick park-

I have the passenger side seat belt which on occassion will lock in the retacted position It has done this twice but I was able to realease the belt moving the strap around. Now nothing I do will release the strap. Is there a mechanical problem I can look at or could there be an electricial issue

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Here is a firing order diagram for that vehicle, and let me know if you need any help to understand this diagram, or if you require any further assistance.

SOURCE: 2003 Buick park Avenue Driver Seat Adjuster...

I am working on a solution motor that comes with a new gear and shaft. I have replaced one of them in my 02 Buick and have parts ordered to replace the other one. These are built with larger gears than the original plastic ones. They are still plastic but seem to work well and don't take the skill needed to replace the plastic gear with the brass one. I hope to take video when I replace the other motor in another couple weeks and upload it to youtube.