I can't wait to find out if this works! I'd love the review camera. I'd really like the side mirror cameras, I'm so mad I didn't realize the trailer camera package included side mirror cameras. I should have test drove more, just assumed for $250 you only got the plug for the trailer camera and big truck/standard box those cameras would be awesome for parking.
Thank you all for posting, what you've learned!
On a side note it's awesome to find stuff works with added parts. My basic trim Acadia was missing a bunch of dic stuff (range, tpms,etc) I was able to knock out a cap and buy a switch that just plugged in behind the dash from gmparts for $15. Instead had it all. Dealer told me they didn't think it was possible, maybe could do it for a couple hundred dollars.