Recently had to do mine too. If (when) this happens to anyone also spend the $10 and get the whole lever which is GM part # 15251895 . No need to take the chance of the ball on the end of the lever rusting off.
I got my bushing off of eBay from this guy:
https://www.ebay.com/itm/USA-Transmi...53.m2749.l2649
They are a hard urethane type material that grabs on both sides, instead of one on some of the ones that I found.