Yes I have a 2019 blazer rs doing the same thing. Won't stop until I put parking brake on. Switching gears and restarting doesn't do anything or playing w shifter.Anyone else experience an issue that when you put your Blazer in Park you get the warning chime to shift it into park. So far it has happened to me 3 or 4 times in the past couple days. I can jiggle the shifter handle to get the chime to stop but it has me concerned.