So, Dan the good news is the dongle will work now. The tricky news is you’ll need to have a pretty current version of the firmware. There’s no guarantee that the ones being shipped will have a current enough version that will work for you.
Whatever you do do NOT buy from the CarPlay2Air site. These identical dongles are sold under the CarLinkit brand on Amazon. At least you can easily return it if needed. There are two options for you. One easy, one not so much. Once you get it if you can get it working straight away, great. If not and if you can get it connected via a different vehicle then you can quickly do an OTA update to get it to the most recent version which will then work in the Malibu.
If access to a different vehicle is needed but not available you can still do a manual update via a USB drive. Here’s a 200 plus page forum that will boggle you with info but the very first post is very informative.
Many thanks to all the contributions on here as I have finally managed to get my CarPlay2Air dongle working in my MX-5 without it rebooting every 30 seconds. I used the USB stick method of updating the firmware to 2021-02-02 after downloading it to an ancient 2GB stick formatted on my MacBook...
forums.macrumors.com
One last caution. Be sure to get the proper version on AMZ. There are several listed but many (cheaper ones) are for 3rd party head units running an Android OS. You want the ones that say ‘for wired OEM CarPlay’ systems. This is the one I bought.
I hope this helps. Good luck and reach back out if you have more questions. Good luck.