it's supposed to be able to move from D to 2nd, and back, without pushing
the button.
that's for quick downshifts via manual control.

if it'll move out of Park without pushing down the button..........
take things apart and see what's wrong in there.
I believe there is a tiny Allen screw on the handle .........so you can
remove that and lift the whole console/cover off and look at the mechanism
there.
But if it is broken, the repair will start with careful disassembly and
inspection.  Often it's just loose or stuck things that need tightening or
lubrication.  It's not a common failure, like a classic 'they always do
this' ...........that I know of anyway.
Scott
turbovans
----- Original Message -----
From: "Robert Stewart" <robertmstewart@MAC.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, August 23, 2008 10:39 PM
Subject: 88 Automatic Shifter does not lock in gear

> Hello all,
>
> My 88 Automatic Shifter does not lock in gear. The thumb mechanism
> spring is intact but you could still move it into any gear at any
> time, a huge fear for me.
>
> How do I fix it so it will lock in gear till I depress the thumb
> release?
>
> TIA
>
> Robert
> NY