Ok, I have a 2020 Chevy Colorado. I ordered the carlinkit 2.0. The Chevy has the infotainment 3.0, which people seem to struggle with connecting. Be patient. It can work on 2019 and 2020 Chevrolets. You have to forget your phone in infotainment and forget the mychevy Bluetooth connection. Then you must be patient. Get out, turn car off, lock and unlock the doors, wait a couple of minutes. You know you are ready to try if you get a flash screen before the man screen starts to come on. With all connections cleared, and You plug in your dongle, it should ask if you want to use CarPlay. Say yes. The car link should ask to set up. You’ll make sure your WiFi is on because after the initial handshake with Bluetooth, the heavy work will be done through WiFi. Go under settingS, general, CarPlay, and make sure you erase another CarPlay if there is one. You want the one that car link just added. If you had previously connected through a wire, there may be a second profile. This can be frustrating as crap, but I just want y’all to know it can be done.
now mine connects great, like others on here, if there is a cold start...meaning, waiting a couple, of minutes, locking car, gettting out. Not sure all the particulars, but this seems to work for me. If you stop the car and certain components are still powered, it will not go well for you, when you restart after a quick stop.
now, when I have had to do a quick stop, I have found that if you turn off bluetooth in the settings, before you turn the engine off, then turn it back on when the quick out and in is over, this seems to take away whatever conflict is occurring. Works for me. Keep trying. It’s worth it if you can figure it out.
or as others have suggested, lock your car and keep your engine running while you make a quick dash. It’s worth it.