I haven't worked on any door handles like a 97 Park. I have a 2005. Last
night I looked in the GM Service manual that I have for 2004. Once you
get the door panel off there is some plug that needs to be removed from
the back of the handle assembly. The door lock linkage has to be
I didn't see any notes that the back door handle is different, but keep
inmind the front door handle assembly houses the door key lock - So that
is the reason they are not interchangeable according to what you have
already been told.
There are only two bolts holding the door handle on, but there are three
plastic tangs on the bottome of the inside of the hadle assembly that
have to be depressed while you lift the door handle upward and out of
the door. It sounds like these tangs are what seals the assembly tighter
against the door & weatherstrip.
91 Bonneville 317,675
05 Park Avenue 82,901