The bars move, if you waggle them.
The cill I am referring to is the painted side of the van, these brackets fit behind under the plastic undertry into what looks like part of the chassis. The part they fix into is metal next to a ridge (which is obviously very rigid). But if you waggle the bracket it does flex just a small amount. But it's enough to chase the bracket to run on the painted cill.
I have a 2021 shuttle but it should be the same.
The cill I am referring to is the painted side of the van, these brackets fit behind under the plastic undertry into what looks like part of the chassis. The part they fix into is metal next to a ridge (which is obviously very rigid). But if you waggle the bracket it does flex just a small amount. But it's enough to chase the bracket to run on the painted cill.
I have a 2021 shuttle but it should be the same.