Chevrolet failed a bit on the design of the pin/bushing snap-on mount for the shift linkage, the bushing (Circled Yellow) often fails when you least expect it, it happened to me unexpectedly one day. But it's never going to happen again. Don't waste your time on getting a new bushing, The Dorman replacement is junk and will also fail. what you need is to order the steel pin pictured below.
Special Thanks to Randy Brendel for the link to the pin, saved me some googling.
Please note, the link above is third-party, hopefully it will work forever, but who knows?
I will also mention, many have fixed it with a simple bolt, 2 washers, and a locknut, (pictured below) but I chose the pin above instead. To each his own, the nut-n-bolt fix is really cheap, the pin above is, well, no-so-much...