Quoting I♡C.:" No clue on that seat, but we just got the Size 4 Me and flipped Chris back to rear facing and we're so ... [snip!] ... him anymore. On a side note, our manual says if you can slip a paper between the seats, it's okay. No clue what yours says."
Do you like it? I've been seeing it recently and it seems pretty nice
Our car manual says absolutely nothing about it. I've double checked the Seat and Restraint, Child Restraints, and the Air Bag section. I'm going to have to call GM's customer service and see if they can answer my questions.
Oh, but I found Diono has an Angle Adjuster, and it looks like it will solve our issues
It's suppose to add up to 4 inches of extra space.
It should make it so we won't need to brace: