I fixed it! I hillbillyed it. I tried pulling it while pushing the D shaped button and it kept sliding back. So I got a piece of wire and pulled the copper middle out and wrapped it around the TV cable then wrapped electrical tape around the cable to hold it on. Now the vette gets firm shifts and actually down shifts properly. Just in time to haul me and the old lady to the "theory of the dead man" concert. They put on a great show and I got to drive the fixed vette. Free fix and a good day.